How do Vagabond opening hand size challenges interact with the skill "Duel, Standby!"?

Some of the Vagabond challenges specify how large your opening hand is, from 1 to 3 cards. However, Téa Gardner's skill "Duel, Standby!" skill starts both players with 5 cards. How do these effects interact? Does one negate the other, or do you just end up starting with 1 extra card above the challenge specification?

The Duel, Standby! skill doesn't start both players out with 5 cards - it gives each player one additional card

Gives 1 more card in each player's starting hand.

So using this skill against the Vagabond with the "Opening Hand: X Card" Challenge will start you off with an extra card as normal