Harry gave him the same amount of time as the coronation. Good for him
Really not sure what this actually means.
The coronation was 1-5 to 2 hours guests had to be in place before - that not same amount of time as 30 min meeting - 45 minutes in same building.
If you mean Harry didn't get to interact more than 30 minutes on Coronation day - well it was a busy day for RF - a huge state occasion - and there are reports his family were big taken aback he didn't say in UK longer.
An 11 hour flight for a 30 to 45 min meeting seems very inefficient especially to leave next day - but I'd do it for my parents if I was worried though I'd get a warmer welcome - does suggest to me perhaps the King and Harry relationship is much worse state than I thought.