It's tough being at a game and being way back and watching individual linemen.
However, Goff had plenty of time to go through his progressions on a number of occasions. Plus they created a lot of room for the running game at times, especially on the exterior.
So, I have to conclude that as a group they did between ok and pretty good, especially as they had 2 new starters.
There is nothing either good or bad, but thinking makes it so.