Whenever I've worked with a new $TECH for an $IMPORTANT_PROJECT_WITH_A_DEADLINE the timeframe for getting up to speed with the new tech has been days, not minutes.

I was on a python/javascript team that transitioned to kotlin -- everything went well, better than I would have expected tbh given only 1 of us even had any production java experience, but 50 minutes would not have been enough time to figure out how to usefully set up the IDE, let alone build anything beyond FizzBuzz.