in terms of entry requirements in early covid days, even for Western European countries, I've had embassies say "we're not quite sure, so do this and that just in case". There is also the chance that the immigration rules are disparate depending on the passport.
again, saying that you can get 9 months contradicts the official wording. It is pretty clear that what the visa here says you're being granted is within a 6-month window. Not to mention that even if you enter on day one and somehow get the best out of the 6 months, 9 months would always assume an extension requested outside a 6-month window.
, it's not. Whatever the number of days (in this case, 60), it says must take place "within the period of 6 months". A literal interpretation is that however many times you enter or whatever you do must take place in a 6-month window.