Why would you expect a "cohesive unit" from a team scrimmage? You have some starters not playing, and others split between the two teams. That is something you could start to complain about after Saturday's game, though even then some starters are still not likely to play, and scrubs will still see quality minutes. We are still over three weeks away to the true start of the season, with this team, you don't expect cohesion this early before the starting five have been chosen.