B2 is just going into 3B.
(I deleted "Meanwhile B2 has reached 3B." which may clarify it.)
Thanks.
Thanks for your answer based on the blabbering mess I provided.
That's what I would have thought also.
Also, I am curious. . .If none of the other happened, except having two runners occupy the same base (which sometimes happens a lot in 10s

), is it an automatically called out on the trailing runner, or does the defense have to tag B2?