Convert datetime

we would do it at DateTime base
Parsing Option was given to you e.g. here:

When also Parsing the other Column Value you can use both within the Condition

Also have a look here as Excel visual presented values are not mandatory the value within a datatable:

:ambulance: :sos: [FirstAid] Datatable: Debug & Analysis invalid DateTime Strings / String to DateTime Parsing Issues - News / Tutorials - UiPath Community Forum