That would only be if they hosted an online meeting (an audio or video conference), not for any outlook meeting (i.e. a meeting booked with outlook doing schedu

That would only be if they hosted an online meeting (an audio or video conference), not for any outlook meeting (i.e. a meeting booked with outlook doing scheduling, but meeting happening in a good old meeting room). And that is then comparable to slack video conferencing, so probably a fair comparison.