The website doesn't list anyone as the Cats offensive line coach. Does Mike Gibson handle this? If so maybe it's too much on his plate. Every other team seems to have OLC and an OC.
After this last loss I had to look up his past history (experience). It seems to read Offensive Line Coach, Offensive Line Coach, Offensive Line Coach and 2 mediocare seasons as OC with Winnipeg. Not that they had much talent, Charles Roberts, Milt hmmm.
Me thinks Porter is not the only one that's lacking experience in his position.