This actually gives me more hope that he is vaccinated.
If he were unvaccinated and was anywhere around Trubisky at all, he would be deemed a high risk close contact and would have to stay away from the team for 5 days minimum.
https://www.usatoday.com/story/sports/nfl/packers/2021/11/03/nfl-covid-rules-protocols-aaron-rodgers-unvaccinated-players/6270691001/
So either he wasn’t around Trubisky and Fromm and Gentry (seems somewhat unlikely), or he’s vaccinated.
The fact that he was wearing a different color wrist band than Cole Beasley at training camp also makes me think he is vaccinated (teams designated vaccine status by wristband color at training camp, per NFL protocol).