

Stray showed up, could he be the same litter as my other stray?
Found in tri cities WA
First image is the guy who came by a few days ago. My other 2 cats were chilling in the morning on our patio and were very interested in him. He seemed cautious but not overly scared and didnt run away even when I was outside/my bf was. He didn't approach until I had the cats come in as my void seemed to want to intimidate him away and my concern was a cat fight. He stayed on the patio for a good hour, sitting on my chairs and even sitting inches from the door peering in. Finally I decided to get him in a carrier and get his chip checked. No chip, and unfixed.
My girl void (2nd pic) was found on the other side of the building almost exactly a year ago in the hood of my car. She was estimated about 3-4 months old and was also unfixed, no chip. Both have the same color, similar face, similar size, and same white spots on chest and low belly (bladder area). Similar temperament too, very sweet to people, good rule followers, very grateful.
Is it possible they are from the same litter? This would make them both about a year and a few months. They don't seem to be super close but it makes sense because they've been separated a year+ now, as well as he is unfixed and more untamed. I find it interesting he was so obsessed with my patio, almost like he smelled familiarity.
Unsure on keeping him as im in an apartment and have 2 cats, as well as a baby on the way but I certainly wont be letting him to roam and am going to try to get him fixed when I can. Good thing is even though we have a 2 cat limit, he looks so similar to our other void to an untrained eye it just looks like the same cat.