I don't see any reason that #SesameStreet can't be in the same universe as #DoctorWho.
https://bleedingcool.com/tv/doctor-who-had-a-secret-spinoff-all-along-its-sesame-street/
Bleeding Cool News · Doctor Who Had a Secret Spinoff All Along – It's Sesame Street!
@mikemccaffrey For years, I always imagined Oscar the Grouch to be a time lord due to everything he supposedly was able to fit in that trash can. #DoctorWho