"Coincidental timing" refers to a situation where events happen at the same time and seem to be related, but it is just a random and unplanned occurrence. Full definition
A convenient, but not coincidental time, seeing that we are having our best season in years and are 14 points ahead of United in the league. (fresharsenal.com)
I've been so excited to wear this Piperlime Collection skirt on here, and it couldn't have come at a more coincidental time. (baublestobubbles.com)
I love coincidental timing because the conversation of ambitious drama has to also include Steven Soderbergh's gloriously dense story of the medical revolution around the turn of the century, anchored by a great Clive Owen performance. (rogerebert.com)