Boris’ super-spreader incubation machines

Typhoid Mary meets the Broad Street pump (or so it seems).

Can anyone explain which dataset was used to verify that…

  1. Efficacy isn’t reduced over 3 months between 1st and 2nd doses?
  2. The delay isn’t creating an environment of evolutionary adaptation that runs a very high risk of creating a strain that’s impervious to the vaccine?

I ask because neither vaccine was tested beyond 42 days (6 weeks) and both Pfizer and Astra/Seneca have cautioned against delay, not least because there’s no dataset to analyze covering the 90 days currently mandated by this incompetent and scientifically illiterate government.