“it’s minimally 800 years from happening”
The two supermassive black holes are separated by just 1,600 light-years
assuming that the holes are on an exact collision course (which is unlikely) and that the holes are each traveling at the speed of light (not possible as far as I know)
I am just going to roll the dice and say “Not Happening”
I did say ‘minimally’.
Wasn’t this a math problem back in grade school except with trains?