Cole felt that when Capello spent five years as England boss, he was not giving his all.
Many felt that Capello did not have complete commitment, which was characterised by his struggles in picking up the language.
"I think it was never a marriage that worked in the sense that, I don't feel like he committed fully to the England national team - and when I say that, I do with full respect because I do think he was a great, great manager, but you need to be across the whole thing, like Gareth [Southgate] is doing.
"He is really showing the way in terms of what is required in that situation and I felt Fabio, for whatever reason, didn't commit fully to the task, but I say that respectfully because working with him, I could see he had that quality. The things he'd do, the things he'd say, he had something. I just think it was always tinged."