EP allocation from this battle pass to the next one

Does anyone know if you can take the 25 levels from the battle pass bundle to the next battle pass?

Since there is no end for any battle pass you could use 50 the next season to reach max level faster. And end the first battle pass afterwards.

Is it possible? Nothing in the q&a.

Is it possible to buy old battle passes if you start playing the game way later? To get some skins you really want.

Anyone any idea?