Hi everyone. I am not sure if this is not already used, but I have found a MUCH easier method of skipping the loading zone in Sonic Adventure. Instead of trying to get the slope spin dash jump past the top of the train station invisible wall, go to the wlal with 2 windows next to it in the corner closest to the hotel. Be careful not to spin dash OoB or you will hit a kill plane.
I am new so I am glad to be here!
58:36.1 SADX Sonic time