The inputs for XIRR are
XIRR("values","dates","guess")
Values are a range
Dates are a range (same number of cells as values)
Guess is a single value
So the answer is no. You would then have two values and only one date (or
two dates and only one value) and either way that wouldn't work.
What exactly are you trying to do. Possible someone can help you find a
suitable formula.
PC