Am I reading this right?...
You've got paired three-ways...
Line and load run to and from the first j-box...
Then you're linking to the other three-way with [ 1-hot leg and 2 switch legs..]
Shouldn't that be you're going out with 2-travelers and returning 1-switch leg... which then heads off down and away to the load side?
Just how is your circuit made up?