Unlikely since Stein and Oliver both draw from different groups.

Here’s how PA played out in 2020:

https://en.m.wikipedia.org/wiki/2020_United_States_presidential_election_in_Pennsylvania

Democratic - Joe Biden - 3,458,229 - 50.01%
Republican - Donald Trump - 3,377,674 - 48.84%
Libertarian - Jo Jorgensen - 79,380 - 1.15%

The Greens didn’t even rate. But assuming the Libertarian votes (Oliver’s party this time) would have all gone to Trump, that still wouldn’t have been enough to flip the election. 3,457,054