Board Thread:General Discussion/@comment-28986801-20170212232334/@comment-28986801-20170213223236

According to Ian Flynn, Rooftop run is from Sonic's future, despise the events not happened yet, just like Sonic CD and 3&K haven't happened yet (for Classic Sonic, that is). In 290, Sonic mentions Generations' events and how he hopes he remembers more of it, despite the events of CD and 3 not yet happened. I think those are different points in time, whether they happened or not yet.