there were any clues to the time displacement between the 2 of them and noticed a calendar in Katsuhikos house:
And a poster at Takis school:
In the back and forth scenes after Mitsuhas first day as Taki we see the 12th of September on both their phones, but as different days of the week. Mon = 2016 and Thurs = 2013. This obviously was a deliberate choice, but I wonder why they went with 3 years and not 5 when day and dates would match again. It also leaves you wondering how neither of them noticed this themselves.
I also noticed that when in each others bodies they don't wear the braid that Mitsuha gives to Taki. I assume it's too difficult for Taki to tie
so he uses a basic hair band.
There's a couple of other plot problems I have like you could easily find a place as distinctive as Itomori on Google maps:
https://www.google.co.uk/amp/lifest...ri-lake-location-discovered-by-movie-fan/amp/
And more of a confusion about the first scenes with Mitsuha than a plot point. It seems to be Taki waking up in her body, but then in the scene that follows, which seems to be the same morning, the grandmother says she's back to normal suggesting this is now the next day?