Agreed, that is the very interesting question. Ingram comes highly regarded after training camp. But, shouldn't jump Elam on the depth chart, but, it would not surprise me. Ingram is 6'2" also which is an additional positive attribute, just an fyi, I am not saying height is ultra important, just interesting.
I hope Elam can play in the NFL. He did last year (and well most of the time), so, I think he can. I also hope he was just outplayed by Dane Jackson and Benford thusly below them on the depth chart this year. And, didn't dress because he didn't play special teams.
I hope Elam steps in as next man up and does a good job! I think and hope he can.
Go Bills!