Is Undertale and Deltarune related?

Related questions

1. Is Deltarune related to Undertale?
2. Is Toby Fox his real name?
3. What is Outertale?
4. What is Underfresh?
5. What is the SANS Undertale meme?
6. How tall is sans Undertale?
7. How do I beat papyrus?
8. What is Echotale?
9. Is Undertale the best game ever?
10. Is Gaster related to Sans and Papyrus?

Tags

1. #actually
2. #undertale
3. #lived
4. #specifically
5. #notably
6. #lives
7. #deltarune
8. #characters
9. #story
10. #affect
11. #events
12. #according
13. #different
14. #world