occur simultaneously

Menstruation and ovulation ordinarily occur simultaneously, but they may be independent and take place at different times.

Tubal and uterine pregnancy occur simultaneously and the complication is recognized in the early months.

Now, did the impact on the President's head occur simultaneously, before, or after the second noise which you have described?

Well, dreams are swift; perhaps Time itself is nothing but a dream, and events that seem far apart really occur simultaneously.

Joint lesions of the nature of Charcot's disease may occur simultaneously with the alterations in the bones.