Overloading description

I came to your nice Tactic trainer, one of the puzzle suggested the tag "overloading". So I went to the help site and gave this link:

http://www.chess.com/article/view/chess-tactics--definitions-and-examples#overloaded

The description is somehow clear:

" A piece that has too many things to do is "overloaded." For example, a bishop which has to both stop a passed pawn from Queening and guard against a checkmate is overloaded. By carrying out one threat (for example, queening the pawn) the opponent could force the overworked bishop to leave its post, allowing the checkmate threat to succeed."

But the example bellow do not reflect the above text.

I don't see what bishop is overloaded or what pawn can queen or where is the checkmate could occured.

Thanks for either help me understand the example or change it to be clearer.

No, the example does not reflect the text.