Well, I do not know much about your background" but there is a a) huge base to rely on and b) and I sure that those 4 hours ride & 2 hours run have a greater "workload" (i.e. effort*duration) that your (or mine) 6h rides or 3h runs.
Also a 3h run is going to require more recovery than a 2h run & therefore having some impact on some of your training.
Fred.
Also a 3h run is going to require more recovery than a 2h run & therefore having some impact on some of your training.
Fred.