There are so many things coming to a head simultaneously.

The word came simultaneously from at least half a dozen people.

They follow one another but do not come simultaneously.

What common change could simultaneously come upon them all?

It must have been three or four seconds in before we both came simultaneously to the thought: this is not stopping.

Jack and Theo looked at one another, as if the name came to them simultaneously.

Then he suddenly understood, and the action came simultaneously with understanding.

Both pressures will come to a head simultaneously, and be resolved with the same action.

I rush to my desk as the advice comes simultaneously.

In 1798, several events came to a head simultaneously.