So after posting a pic of my Spotted Python on here a month or two ago for some second opinions, I decided to move him up to an XL mouse.
I fed him the XL mouse on Friday, and he has been in his hide since then (as expected after feeding). I shined a light in on his hide to see if I could make out the bulge in his stomach, and I saw where the mouse had ended up as evidenced by a bulge and what looks like scale separation. It doesn't look too huge or anything but keep in mind this is two days after the feeding. When eating a normal-size adult mouse, he is usually active again by this point. I took a picture with as much clarity as I could get without disturbing him by movement.
I did notice a newly-passed urate on the other side of his cage though, so I guess he's been active without my knowledge. He also sticks his head out on occasion when I enter the room to see what's going on. Basically I'm just concerned if the food item was too large. I don't fear that he will regurgitate; I feel like he'd have done it by now if he was going to. Just concerned about when the next feeding rolls around if I should opt for a smaller prey item