Don't Forget motif in Last Goodbye

Hello! I couldn't find anyone else talking about this (although I'm new to the forum so please correct me if I missed something).

The piano solo, Toby's "self-expression", in Last Goodbye 0:45-1:07 shares a lot of similarities with the Don't Forget motif from Deltarune. This came to mind after listening to this Youtube video by Marty Makes (timestamped) where he overlays the lyrics of Don't Forget onto the Last Goodbye piano solo and it matches up surprisingly well. Turns out that the rhythm and a lot of the notes match the motif.

It would make sense if this piano solo actually turned out to be used as inspiration for the don't forget motif, or is straight up an early development version of it, given what we know about the concepts for Deltarune being around since before Undertale released.

Before I suggest an edit to the wiki for this, what are people's thoughts on this?

I can hear how the lyrics COULD be overlayed, but listening to the raw song all I can hear is the Once Upon a Time motif.

I don’t think we could call this a motif, since only the BPM appears to match. The BPM of Don’t Forget is around 78, and the BPM of Last Goodbye is 164 for the piano part, which is 82 when halved. 78 is pretty close to 82, and cutting out that pause probably made them sync closer.