8-2-e Runners lane interference

[rbmartin]

Originally Posted by rwest

In FP Softball the ball is live when the batter becomes a batter-runner during a base on balls situation. Some teams will have their runners round 1st and go to second. This is normally done with a runner at third. If they throw to second to get the out, the runner from third advances home. Some teams will defend this by throwing down to first base. If the runner interferes with this throw while out of the running lane we have interference.

So in the above mentioned scenario, is the B/R out or is R3 out? I assume it is delayed/immediate dead ball depending on if the throw actually contacted the runner or not?