How does the initial 50% XP bonus work with the premium rocket pass?

How does the initial 50% XP bonus work with the premium rocket pass?

If I'm on tier 50 of the rocket pass can I expect to get an immediate tier up? How big will it be?


Except for the 10k experience bonus from tier 55, upgrading to the Premium Rocket Pass does not give you any retroactive bonus XP.


As far as I am aware, the XP boost affects XP gained via matches and not the XP gained via other sources (i.e. XP rewards from Rocket Pass tiers).