Help Combining Commands on a CMD Block

I'm trying to make a PVP area on my realm away from the main area using command blocks to teleport to the designated area. However I would also like it to clear the players inventory so they don't get a head start. I've tried using Command Combiners, but none of them seem to work, they just spawn some gravel and a minecart + cmd block. The specific commands I'm trying to combine are:
/tp @p 98338 156 84729 and /clear @p.

The cmd combiners gave me this command, but it did not work:

summon falling_block ~ ~1 ~ {BlockState:{Name:stone},Time:1,Passengers:[{id:falling_block,BlockState:{Name:redstone_block},Time:1,Passengers:[{id:falling_block,BlockState:{Name:activator_rail},Time:1,Passengers:[{id:command_block_minecart,Command:"gamerule commandBlockOutput false"},{id:command_block_minecart,Command:"fill ~2 ~-3 ~-1 ~5 ~-1 ~1 light_gray_terracotta hollow"},{id:command_block_minecart,Command:"fill ~2 ~-2 ~-1 ~5 ~-2 ~1 white_stained_glass replace light_gray_terracotta"},{id:command_block_minecart,Command:"fill ~3 ~-2 ~ ~4 ~-2 ~ chain_command_block[facing=east]"},{id:command_block_minecart,Command:"setblock ~3 ~-2 ~ repeating_command_block[facing=east]"},{id:command_block_minecart,Command:"data merge block ~4 ~-2 ~ {auto:1,Command:\"/clear\"}"},{id:command_block_minecart,Command:"data merge block ~3 ~-2 ~ {auto:1,Command:\"/tp 98338 156 84729\"}"},{id:command_block_minecart,Command:"setblock ~ ~ ~1 command_block{Command:\"fill ~ ~-3 ~-1 ~ ~ ~ air\"}"},{id:command_block_minecart,Command:"setblock ~ ~-1 ~1 redstone_block"},{id:command_block_minecart,Command:"kill @e[type=command_block_minecart,distance=..1]"}]}]}]}

Is there anything wrong with this and how would I fix it? I'm on Java Edition if that matters.

Here is an expanded version of that command:

summon falling_block ~ ~1 ~ 
{
  BlockState:
  {
    Name:stone
  },
  Time:1,
  Passengers:
  [
    {
      id:falling_block,
      BlockState:
      {
        Name:redstone_block
      },
      Time:1,
      Passengers:
      [
        {
          id:falling_block,
          BlockState:
          {
            Name:activator_rail
          },
          Time:1,
          Passengers:
          [
            {
              id:command_block_minecart,
              Command:"gamerule commandBlockOutput false"
            },
            {
              id:command_block_minecart,
              Command:"fill ~2 ~-3 ~-1 ~5 ~-1 ~1 light_gray_terracotta hollow"
            },
            {
              id:command_block_minecart,
              Command:"fill ~2 ~-2 ~-1 ~5 ~-2 ~1 white_stained_glass replace light_gray_terracotta"
            },
            {
              id:command_block_minecart,
              Command:"fill ~3 ~-2 ~ ~4 ~-2 ~ chain_command_block[facing=east]"
            },
            {
              id:command_block_minecart,
              Command:"setblock ~3 ~-2 ~ repeating_command_block[facing=east]"
            },
            {
              id:command_block_minecart,
              Command:"data merge block ~4 ~-2 ~ {auto:1,Command:\"/clear\"}"
            },
            {
              id:command_block_minecart,
              Command:"data merge block ~3 ~-2 ~ {auto:1,Command:\"/tp 98338 156 84729\"}"
            },
            {
              id:command_block_minecart,
              Command:"setblock ~ ~ ~1 command_block{Command:\"fill ~ ~-3 ~-1 ~ ~ ~ air\"}"
            },
            {
              id:command_block_minecart,
              Command:"setblock ~ ~-1 ~1 redstone_block"
            },
            {
              id:command_block_minecart,
              Command:"kill @e[type=command_block_minecart,distance=..1]"
            }
          ]
        }
      ]
    }
  ]
}

Solution 1:

https://mrgarretto.com/cmdcombiner This website combines commands together. Similar to only 1 command. I don’t know if this will help but it’s all I can offer.

Solution 2:

You entered a slash (/) at the beginning of some commands. That does not work in command blocks, so it probably also doesn't work in command block minecarts.

Also, have you checked whether simpler cases work with this generator? Maybe the generator is just not working. I personally use this format for one-command creations: https://bugs.mojang.com/browse/MC-145113?focusedCommentId=542757&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-542757