Date/Time formula - Need help

Hi all,

I need to add a date and time check to a SmartSheet I am working on. Currently, we are trying to track late arrivals into our building.

Example:

=IF([Actual Pick Up Time]@row > [Critical Pull Time]@row, "Late", "On-Time"

=IF([Scheduled Pickup Date]@row = [Actual Pick Up Date]@row, "On-Time", "Late")

The above statements works fine as one, but when I try nest the formulas, here is where I am having issues with "#INCORRECT ARGUMENT SET"

Tried the following:

=IF(AND([Actual Pick Up Time]@row = "", "", IF([Scheduled Pickup Date]@row = [Actual Pick Up Date]@row, "On-Time", "Late", IF([Actual Pick Up Time]@row > [Critical Pull Time]@row, "Late", "On-Time"))))

How can I combine these two formulas into one? Ideally, I want to capture when "Actual Pick Up Time" > "Critical Pull time" in conjunction with having the "Scheduled Pickup Date" match the "Actual Pick Up Date". If the "Actual Pick Up Date" > "Scheduled Pick Up Date" this should produce a late regardless of pickup time.

Hope this makes sense.