No it is not enough time. Essentially you are looking to connect from a twenty hour plus international flight to another flight within 1 hour 50 minutes, with immigration control factored in.
The twenty hour plus international flight can easily be delayed one hour or more. It is very very tight, basically almost too tight. I advise you check the international flight to see its historical percent on time performance. That will give you an idea of the probabilities you are playing with.
If there is the possibility to change the second flight or even the first, you are advised to do so. A 20:45 flight is likely to be the last flight for that route on the day meaning its very likely if you miss it, you will have to book a hotel and incur further costs before continuing on your journey the next day.