a coincidence
Tom no cree que sea una coincidencia.
Tom doesn't think it's a coincidence.
Me pregunto si verdaderamente se trataba de una coincidencia.
I wonder if it was truly a coincidence.
No puede ser una coincidencia.
It can't be a coincidence.
A coincidence.
No sé si eso sea una coincidencia.
I don't know if that's a coincidence.
— Roofman: Un ladrón en el tejado (2025)
No era más que una coincidencia.
It was nothing more than a coincidence.