For those that say it is X mins too long, what parts would you have cut out to explain that reasoning or did it not fit the mantra of your expected viewing times? Personally, I can't think of anything to cut out.
Personally I did not realize the movie was long until about the very end but this movie unexpectedly had my mind engaged throughout except the ungripping beginning. I really expected to figure out what the short story of the clock maker and the backwards clock had to do with the whole story but I feel it is just a simple correlating short story with the whole movie. The titluar character really didn't do much come think of it and I noted that he is simply experiencing life from birth to death, observing and watching.
The ending point he had made wasn't as concrete as it should be due to not of a strong examples he has experienced throughout his life but it is a point that I feel is quite good but it really only applied to Daisy.
The lightning scenes are indeed the moment breakers that I feel were placed intentionally as without them, this would be a slow movie. They were also placed at uneven breaks too, possibly played by the same actor as well (didn't catch the credits in full).
It is an intriging movie that I didn't expect. A definite recommend to watch.