After the fight, Harker had merged with everything else. He had to or else he wouldn't be able to survive the injuries he sustained from fighting the Ice Giantesses.
He had noticed it mildly when he created Harker 2.0, but it was clearer to him now that the more clones he created, the more he 'stretched himself thin'. Every version became more watered down than the one before it, and the less control he had for all of them.
He was so focused on juggling the ones at the Port of London that he couldn't sense Harker 2.0's actions while fighting. But now….
He couldn't sense him at all. This along with the injuries he received had thrown Harker for a loop.
"Where is he….. Where is he…." He was mumbling as Joan brought him to the hotel.
"Where is who?" She asked. but he didn't answer.