Add a condition to an Excel formula to include when date in one cell equals date in another cell

Column AH = Date WO was completed
Column AI = Deadline date

My formula below indicates whether the WO was completed by the deadline or not:

=IFERROR(IF($AH2="","",IF($AH2<$AI2,"Yes","No")),"")

I need the above formula to be modified to include the additional condition below:

If AH2 = AI2, the result is also 'Yes' (the deadline was met)

Thanks!
Andrea