BBM. You keep stating this but it's not true. You failed to produce any picture of such. I have every picture ever posted online of this family and there is not a single one of Joseph and Chase together in paintball gear.We haven't heard the phone ping evidence yet. so that I don't know about. But there is a picture on line of Joey and Chase geared up to go paintballing, so we know they did this, or at least dressed for it once.
The DNA in the Trooper, because of where it is found, and where it wasn't, to me, does seem more consistent with transfer DNA than it does with direct contact-but we may never know this with absolute certainty-so that will be up to the jury.
I don't find anything odd about Chase getting a ride with Joey to play paintball. People often consolidate vehicles if they are going someplace together, from a place where they have met up first. If Joey was in the habit of driving to Chase's home when they went to play paintball, it makes perfect sense to me that they would then take a vehicle to the game together. And the Trooper seems like a logical vehicle to take.
That's not to say he didn't go with him. @mrjitty put it so eloquently, I was thinking the same thing all morning reading posts - Chase will be perceived as a liar by this jury and they don't have to take anything he says as truth. As a juror, if you believe the defendant is lying, you can throw out and discard their entire testimony or statements made. His interview is considered his testimony of events.
If this DNA is distributed to places by secondary transfer as you suggest, why isn't it on the first places Joseph would have touched - the outside/inside door handles?