Connor Oswald is most likely the Connor that Rich was messaging.

Connor Oswald is in Los Angeles, the other one is in San Diego...

I need to find out who Connor Oswald really is.

Rich's parents didn't know about him and Rich only messaged him a couple of times on his old phone.

If Connor Oswald has a landline, I can locate him.

Sure enough, he does. He lives on the outskirts of Los Angeles. The shortest path to him is through Chinatown.

Before talking to him, I need to know who the guy is.

I'll stake out his house.

*Drive to Connor Oswald's house*

I'll stay about 5 houses away during the surveillance.