Is he in the kitchen while you are in the living room? Ziggy our working cocker is 8 months now. He wants to be with us all the time, I don't think whatever I did to entertain him he'd accept me being in the living room and him being shut in the kitchen. He puts up with us going into the dining room for dinner now, but he does just lie at the stairgate waiting for us to come back.
I find that he gets through a kong really quickly, so they don't entertain him for long. He loves find it type games, but you need to be with him for that. We also don't use the crate now for anything other than night times. Maybe he's more unsettled if he's in the crate for two hours at a time, that might be making him bored. Other people might correct me but two hours at a time seems like a lot of time to be in a crate, especially if you are in the house too.