It didn't take long for the 'new arrival' spell to let Doctor Strange know where to go and who he was dealing with. So he was able to answer the question he overheard as he was stepping through a portal to greet the latest arrival.
"Yes, you're on Earth," Strange said, before he stared at a fellow - very terrified - human being. A human being that probably didn't expect to have a cyborg drop out of the sky before a wizard in a red cloak walked through a fireworks portal. The portal closed in on itself, as Strange sighed out his most used excuse, "...comic con."
It didn't look like the poor person believed that excuse. At all.
"Yeah, well I tried." Strange focused instead on Nebula, who was somehow familiar from a lot of those fourteen million six hundred and five incredibly disjointed puzzle pieces in his memories. Some of those pieces managed to fit into place together. "Oh, right. You were on Titan with us. Hello." There was a pause before he added, "Again."