I could see it being the same, sort of.
I had been thinking it would be 2 years from the specific date I got the bonus, but it could easily be 24 calendar months, regardless of what date within the month you got it. Like, even early in the month (August 4) makes the whole month of August (thru 8/31) a month that is part of the 24?
I'm gonna have to find a good Chase human and figure out exactly when I got the bonus and when 24 months accordingly has passed.