Well, neither QB had a chance to do much against Tennessee's #1 defense, but midway through the third quarter the Titans finally put in their reserves so that the Packer O-line was not overmatched. Then it got interesting. The bottom line: Flynn looked better. I think he probably won the #2 job.
Here are two things to consider:
1. Brohm played one series after Rodgers left, then they alternated between the two QB's. So Flynn pretty much got equal billing.
2. With the Packers down to two minutes and a chance to tie the game, Flynn played QB and led the Packers to a TD, although they missed the two-point conversion that would've tied it.
Brohm had a few good moments as well, and he came very close to throwing his first TD as a Packer, but the catch was overturned (correctly) by the officials. But mostly Brohm still looked kind of flustered to me and he made more bad decisions than Flynn did. (Holding onto the ball way too long on a sack when he was out of the pocket and could've thrown it away; some short throws in long yardage situations.)
Because of Flynn's performance, I think the Packers can get by without signing a veteran backup QB. And both of these guys should be improving with every week that goes by.