When I entered Ch 5 i was about lvl 30 for everyone. +-2 lvls between characters.

By the time I had compleated everything and was ready to do the Last few Harder bits of ch 5 i was about 38-40

Thats when i realized that many of the last bits of this game require much higher lvls, some things probably 70+ maybey even 99, so in one Full Days Time i reached every character from 40 ish to 99.

you can lvl very fast in this game, but for the majority of the game there is really no point in being that strong.