I mentioned this at that time, didn't want to go about it continuously then of course, because we still had a chance and that would be being negative, but now I do think that the most important factor here was Man City not reaching the CL Semi Finals. In 3 of their last 4 seasons, Man City recorded 12, 12 and 10 points in their last 4 games. In those seasons, they did not reach the CL Semi Final stage, so they didn't have CL games between their last 4 league games. In 1 of those 4 seasons, they reached the CL Semi Final and only managed 5 points in their last 4 games. I think that is evidence enough to show that they are distracted by CL and even give it the higher priority. If you ask me, I would say this was the biggest factor in all for Man City 14 game winning run.
Agree with the rest but not sure if this part is necessarily the case. That's a really small sample size with a load of other variables that could be relevant.
Most important of those is the fact that the 5/12 points they got in their SF season was also the season when they last had Pellegrini. With all due respect to Manuel, who's a very good coach, he didn't build league winning machines the way Guardiola does.
Looking at City's last 4 seasons worth of last 4 games:
18/19 - No SF, max points
17/18 - No SF, 10/12 points (Home draw to Huddersfield, but they had already won the league by this point)
16/17 - No SF, max points - However, in the 6 weeks after they were eliminated by Monaco, they dropped 11 points. That's 11 points dropped when they didn't have the distraction of European football (although they did lose an FA Cup SF to Arsenal between two draws at the end of this run).
15/16 - SF - 5/12 points - However, as noted, they had Pellegrini and not Guardiola