Random question but; what do different numbers of bars mean on co pilots? I know captains always have 4 but when I flew on a recent flight with Norwegian, the first officer ( I assume? ) only had one, however on other Norwegian flights, I’ve seen them with 2 or 3 bars. I guessed it was based on hours/seniority but when I watched the recent EasyJet documentary, even the most junior had 2 bars. Likewise with BA.