I've only watched the Spring Game once and with Tony Elliott's involvement with coaching them I had hoped to see improvement from them during the game.... but I really didn't.
I played the position a long time ago and learned that there were 2 basic blocking styles in the run game:
1) The TE can take on a DE, DT, OLB or safety one-on-one at the LOS or help with a double-team to create a hole.
2) Go through the hole as a lead blocker and look for the next level LB or safety to spring the RB after he has popped through the hole.... but for this blocking style to be successful, you have to trust the OL to be able to hold the block on the defender AND get some push.
The problem with choosing #2 is that the OL has to be able to hold his block by himself and the TE trying to lead the RB downfield becomes an exercise in wishful thinking as the defender gets off of his blocker and stops the RB.
Time after time, I watched our TEs go through (or clog up the hole) trying to go through a tight hole with the RB just running into the pile for little or no gain. When the TE did get through the hole, the defender would slide off his blocker right after the TE went through and then tackle the ball carrier.
I only saw one good solid double-team block to open a big hole - and that block was by Davis Allen. With an OT on the defender's outside shoulder and about to shed the block, he directly engaged on the defender's inside shoulder and really drove him like a run-blocker should do. That's the way to open big holes - then let the ball carrier juke the next level defender..... because if he can't get through the line, it does no good to be blocking at the second level.
I realize that the talent was split for 2 teams and we weren't seeing a cohesive OL, but if we're going to be successful with that stable of RBs, we need to either get a lot better at OL run-blocking or teach the TEs to double-team and drive at the point of attack - or both.