Another way to say what I laid out below is, assuming that NW took all the clock-off days available to them to respond rather than responding early (which is unfortunately not a crazy assumption to make), then NW's MAA still has 18 clock-on days (if clock started on 1/24/24) or 61 clock-on days (if clock started 3/7/24), PLUS any remaining unused clock-off days, before NW's MAA would be considered to be 'backlogged' (i.e., beyond 210 clock-on days).
And, crazy as it may be, if the clock started on 3/7/24 and NW took all available clock-off days, then MHRA could approve tomorrow, 4/30, and MHRA would still be able to say this MAA was approved within MHRA's accelerated 150-day review process.