Batter INT on a steal
Intent does not matter
Contact is NOT required
A throw is NOT required
Delayed dead ball
Verbalize it IMMEDIATELY, but let play continue
Wait to see if the out is made anyway (If so, interference is ignored, runner stealing is out)
If out is not immediately made (runner is safe, run down ensues, or throw is cut off)
"Time, that's interference!" (point at the batter) "That's interference!"
Batter is out, baserunner(s) stealing must return to the base occupied at the time of the pitch.
If pitch resulted in strike 3...
Point at batter: "That's interference! Time!
Point at the runner. "Runner is out!" (you get 2 outs)