Archetype Stacking

Hello all, I have a player who wanted to dip one level into fighter with the yakuza and titan-fighter archetypes. They don't stack normally but they don't interfere with each other for the first level. Can he do this or does it not work because they overlap later?

No, he cannot. It doesn't work. You're correct about the overlap.

If this is a home game, you can do whatever and can make it overlap.