This question sounds more complex than it is, so I'll provide the piece of writing that made me curious:
These realities differ from the core MCU in both minor and substantial ways, showing what would've happened if the films had played out differently.
Basically, I'm curious about the use of an 'if' subordinate clause inside a participle phrase. Is this considered part of the wh-clause (noun clause)? Or is this a subordinate clause inside a participle phrase, which would surely make it not a phrase anymore? I'm almost certain it's a part of the noun clause, but I would like clarification for peace of mind.