No single scene, just some of my favorite Sonic franchise references throughout the game - at least, of the ones I haven’t posted already.
Of all of these, surprisingly the biggest one for me was the nod to Music Plant Zone from Sonic Advance 2. It’s my favorite stage in the Advance games, and high on my wishlist of stages I’d love to see make a return someday.
Though the Sage reference is also pretty great. As is them rolling past the opening area from Sonic CD.