It was just to Charls' advantage that Conall didn't use the wire to get to Cora, otherwise it would be a little more difficult to track him. As it is, he'd only had to tap on a few security cameras to trace Conall's progress while he sat in the taxi cab, giving out his instructions. He stopped in the corner before the garage and walked -- that is to say, marched -- from there.
What Charls meant to do was, a little surprisingly, not immediately obvious to him. Blair had instructed him to get down to the network attack and so that was what he would do but there was the question of keeping this clean or downright dirty because for all of Charls' quiet facade, he was immeasurably pissed. Those were firewalls and security procedures he'd dedicated all his time and work to and nothing feels worse than being slapped in the face with the sting of failure. Obviously, Willowbrook was the first suspect. The IP addresses all traced to a general Staten Island area and who would have interest in Syndicate files but the Centurions?
As soon as Conall Clancy was within shouting distance, that was exactly what Charls did: raised his voice and called out, "Mr. Clancy, a word." He and Conall didn't really meet back in Willowbrook but he knew the man's mutations from reputation and what he didn't know, he could filch right off his or Cora Burton's heads. Which is exactly what he did for their names.