As an audience member, no. We saw the final confrontation between them.

Picard and friends, on the other hand, have legitimate reason to be suspicious.

Data and Lore switch places on every encounter. From Datalore to Brothers its Lore. Then it’s Data again until Descent. Then back to Lore until Nemesis. That’s the real reason Data’s personality is all fragmented when he returns on Picard. Too many swaps got him confused.

every goddamn day of my life