You can't know if they are owned by the same person. It's a vulnerability with Tor that's practically unavoidable. They select the servers at random so the risk is lowered, but it's still theoretically possible to get three nodes owned by the same person.
You shouldn't be using Chrome on Tor. There is a special build of Firefox which doesn't leak information (JavaScript is disabled by default). Download here: https://www.torproject.org/projects/torbrowser.html.en
You shouldn't be using Chrome on Tor. There is a special build of Firefox which doesn't leak information (JavaScript is disabled by default). Download here: https://www.torproject.org/projects/torbrowser.html.en
