User blog comment:Justbeho/SQUAD BUILDING HELP IS HERE!!!/@comment-27858253-20160310033021/@comment-27068645-20160310231720

Yes, it doesn't stack, but

it only wont stack if it boosts the same parameter

as you said

Gazia boost atk by def, and reeze boosts def by rec. These boost different paramter, one for atk and one for def. SO, it will stack.

IF you use Gazia BB and get boost def by atk, then, it wont stack