I've just been looking at the timing charts and gaps between drivers.
Max is 8.3 behing when he pits on Lap 13.
Lewis pits a lap later then the gap ends up at around 5 seconds between the two of them.
Sergio holds Lewis up till Lap 20 and Max ends up around 2 seconds behind, all straight forward so far.
On Lap 36 Max at around 8 seconds behind stops again then ends up around 20 seconds behind (less time lost with VSC).
This is the point where I think the Mercedes strategy lost the plot, leaving Lewis to do 44 Laps on these tyres when he simply did not have too!
Max gets the gap down to around 12 seconds by Lap 53 stops for softs and ends up only 15.4 seconds behind due to even less time lost with the Safety Car.
I do think the strategists at Mercedes got this wrong and were too focussed on the track position rather than the "what ifs".