>>529821542
This one is honestly better since it's all contained in Deltarune

>>529563045
>>529563060

Sans literally refers to Papyrus as having a "schedule"

Eggman gives us his Schedule in chapter 3.
I do think it might be a very different Papyrus who's older, or even DR Gaster who then becomes Papyrus due to being "reborn" from the eggs when we get them all