I'm pretty sure Melton credited Forstall with giving with the support and cover for safari/khtml - she's written extensively about it.

https://donmelton.com/2013/01/10/safari-is-released-to-the-w...

And for Apple Maps, I remember reading somewhere that one reason Forstall refused to sign the infamous apology letter was that the initial release was from a team not directly under his supervision, but I can't find the old reference to that...granted, whatever went down was probably a joint failure of everyone involved