I have questions about using stopovers on a single journey from Asia back to Canada. This will likely be in April of next year and would hope to be booking J flights at least transpacific. So in April next year, planning to either be in Hong Kong or Japan, but need to transit back through Taipei and stay there for at least a week. Hoping to use alternate carriers throughout (EVA/ANA).

If I am booking a stopover, does this have to be booked as a stopover from the very beginning, or would it be possible to book Japan-Taipei-Vancouver or HKG-TPE-YVR as a single non-stopover flight, and then call in and adjust just the first leg from Japan/HKG to Taipei? Or just book TPE-YVR now, and call in in the future to add the first step and have it designated stopocver?

Is it possible to use the multi city booking option on Aeroplan for this? When I try it it seems to add the 2 miles and taxes together.

It looks to me like the appropriate option is to call in when both of these flights are available and designate the journey as a stopover journey from the beginning. Is that correct? No online option that minimizes taxes/miles?

Once I have made a legitimate stopover booking, I can then move the two parts around individually if necessary?

If J status is achieved transpacific, but other booking is not on the stopover flight (economy), do I have J status on the first part (economy) booking?

With TPE currently still with 2 weeks quarantine (and no tourists), will this mean I cannot call in and make the booking)? I believe this is the current rule, but hear it will change

Thanks for any help
Jeff