Hey - just to confirm I managed to do my connection flight to Ottawa from Toronto.
I ended up flying on 27th April because my 28th April flight was cancelled (last minute on 24th April)
I flew with Air Canada from London Heathrow to Toronto. I did not have a connection flight at the time. Once I landed and did all the PR immigration paperwork, I collected my checking luggages in Toronto and bought a same day 1 way ticket to Ottawa (the final destination mentioned on my COPR letter). I then did again the checking of my luggages and boarded the second (and last) flight and finally landed in Ottawa 45 minutes later.
All in all everything went smooth and even if I did my first POE paperwork in Toronto I was not required to do my quarantine in Toronto.
I arrived at London Heathrow at 8.00am and needed to wait for the Air Canada stand to open at 9.00am. Because I had a COPR letter (not a Canadian passport or PR Card), I needed to deal with a supervisor at the counter before checking in so that he could confirm that I was all cleared to travel. No big deal at all he only made a quick phone call and I believe the main important thing he verified was the date the COPR was issued) ...then he said "ok you are good to go !!!"
Before boarding I was asked again to show my COPR letter. It was only 29 passengers in the whole boing ! We (my spouse and I) could sit wherever we wanted which made it easy to comply with social distancing. The plane was so light that we actually arrived 1 hour early in Toronto. We were required to have our mask on during the whole flight and the air crew was fully covered mask + gloves + full white clothes covers...they looked like surgeons....
Prior to the departure we had booked a grocery order pick up with Walmart and arranged with our Airbnb host that he would collected and delivered the order to us.
Now we are almost halfway through our quarantine. We are starting to search for a permanent accommodation (the current Airbnd is booked for a month).
As soon as the quarantine is over, we will open a bank account and ask for a formal bank letter so that we could use it as a poof of address to apply for our SIN online.
Hope this helps
Stay safe everyone !