Adding that leaving CA through GCH is a much shorter walk to PPH than DLH. (I’m unsure of the actual time.) The downside if you were to do this to DLH is that you’d have to go through security again and go through Downtown Disney.
we used to go through GCH from PPH, but they no longer allowed this due to security changes. (Unless it changed again.)
Basically, if you can cut through GCH, it’s a shorter distance. But since you can’t do that TO the parks, DLH is shorter. But leaving the park, PPH is a shorter distance.