The point that I was trying to make; with some uncertainty because I don't know how long the a/c was on the ground at Toronto nor the flight time to Ottawa, was where did the appearingly accurate time-stamps come from for the table on page 5 of the report and indeed the audio, where at the bottom of page 4 it says:
"Once below 500 feet above ground level (agl) on the approach, the following audio occurred in the cockpit" [my emphasis]
The listed sources of message suggest that a CVR (with time stamping) was in fact running, which is contrary to the statement on page 7 that the cockpit voice data was overwritten (due to 2 hour duration of the DVDR memory.