Interference question

[bluduc]

I did not see this play. Coach call me for a ruling.
12 yo obr rules.
No outs, no one on, batter strikes out. clean catch by catcher. Batter heads for firstbase do. Stopes to talk to coach as the next batter takes his plase. Pitcher starts his pitch , player runs to first and hits first as batter hits ball to left. Fielder thinking the runner going to third was in play sails the ball into the dugout.
First I think the bu with no one on in A had to see the player at first and called time at that point making the ball dead. However if he did not see the runner, after all was over would 7,09f apply without going to 9.01c.
Coach said umps ejected the runner that was out and gave the batter first. After the call had to eject both coaches for the o team and one coach for the d.
Sounds like poor officiating caused a mess that was not necessary.
I have been umping 36 years and never had this happen.