Board Thread:Game Discussion/@comment-17851-20130801185744/@comment-72.229.174.154-20130801191435

I maxed two, evolved them, maxed the evolved one then evolved it with yet another maxed out one. Got the 10% each of the two Tim's I evolved.

So:

Level 1 Soundwave maxed + Level 1 Soundeave maxed = Level 2 Soundwave

Then

Level 2 Soundwave maxed + Level 1 Soundwave maxed = Level 3 Soundwave

Each evolve received the 10% bonus.