OK,
As I understand it:
In J5
If A5 =I5 and if C5 doesn't contain "T", use C5, otherwise use something else - as yet undefined
to make this independent of the rows
=If(and(indirect("A"&Row())=Indirect("I"&Row()),ISERR(search(indirect("C"&row()),"T")),Indirect("C"&row()),What data do you...