Pre-cat was was correct.
Bank 1 is passenger side and bank 2 is driver side.
So you were wrong and I went ahead and replaced the sensor on the wrong side.
The correct information is as follows:
Bank 1 corresponds to engine spark plug number one side and that is on the side of the closest cylinder head to the front(plug #1 is). That is the passenger side.
Bank 2 is driver side and sensor 1's are pre-cat and sensor 2 are post cat.
So your reply should have been pre-cat drivers side.