From July 30 through 6th August Janusz Gluza took part in NuFact 2022, chairing one of the plenary sessions and giving the talk “PMNS and the number of additional neutrino flavors” https://indico.fnal.gov/event/53004/contributions/243136/attachments/158351/207755/NuFact_2022.pdf. This conference was held in Snowbird, Utah, USA, and focused on neutrino physics and colliders. The twenty-third of the series of yearly international workshops started in 1999.