Just for your reference, this is the experience shared by that person on our whatsapp group. Though this person had a 24hour layover which I feel is A LOTTTT:
"
Guys I have arrived at Toronto, Canada.Thank you so much for all the efforts put by all the people to help me to reach my destination finally.
I took BOM-LHR & LHR-YYZ.
FIRST BOM-LHR
1)I came from Gujarat so took online pass from Gujarat digital website of intrastate exemption curfew pass,if was issued in half n hour for me.
2)I took private car to reach airport, I just left at 11:30 from my house and reach the Mumbai Airport by 6:00 as there was no such traffic I encountered that day.
3)There were two other flights same Dah for KLM for their country's repatriation flights,so they started taking us around 12:30 p.m. inside,there was no such thing,only two forms were given with detail of our passport,current house address of India,and etc.and at gate they check temperature and wrote on our one of form(Health form)
4)Thereafter went inside ;they gave us bag which had PPE shield,mask etc.
5)After there we went for baggage and check in,there I encountered a problem that as I was transiting through UK more than 24 hours,as my flight was for next day which was half an hour more than 24 hour,they argued really that UK only allows 24 hours,so guys better not take any connection from UK to Toronto which is more than 24 hours,but as we were other three and really convinced them that plz allow us to go,one of the authority help us but it was really hard to convince.
6)Once they got ready I did my luggage check-in directly for Toronto,and they gave tags directly for Toronto,but as stay was more than 24 hours we couldn't get boarding pass for LHR-YYZ,which we collected from LHR onwards.
7)On the LHR it is very simple and nice,it is everything good just security is strict to better keep liquids in one bag and none of item more than 100ml.
8)While on boarding plane from Canada they just check your temperature and allow u to board thereafter they let us board.
9)On entering Canada they ask us to fill regular custom declaration form,and health card.and good to go to collect your baggage..and just they ask your quarantine at security border check."