Breer commented on GRob today here

In a TV interview here in Boston this morning they asked Albert Breer a question about Robinson and his comment was along the lines of "Auburn coaches 'warned' NFL teams in 2014 that Robinson had only been asked to learn about 6 running plays and 3 pass protections and that he could take quite a while to master an NFL offense."

Partly why I tend to prefer Big10 or even Mountain West Conference OL with 3+ years starting experience. I think they're much better equipped for the NFL transition.