Worse still, it coincided with an even deeper dip in his Keeping skills, which made him still more aggressive, so that during the final Quidditch practice before Saturdays match, he failed to save every single goal the Chasers aimed at him, but bellowed at everybody so much that he reduced Demelza Robins to tears.
There are no more uses of "coincide" in the book.
Show samples from other sources
The two events coincided
The publication of the book will coincide with the 10th anniversary of the event.