canada – Transiting at Montreal airport to other Quebec airports – will I be quarantined in Montreal or at my destination?

I’m a european citizen going to Canada for work. My destination is in Quebec, but there’s no direct flight from my city to the destination, i.e. I have to change flight at Montreal airport.

I know I will be quarantined for 2 weeks, but will I be quarantined at Montreal -1st place I reach in Canada], or can I take a second intern flight and quarantine myself at my destination?