How to Say "concurrently" in Spanish
The Spanish word for “concurrently” is “simultáneamente” — B2 level.

Examples
Es difícil hablar y escuchar simultáneamente.
It is difficult to speak and listen simultaneously.
La película se estrenará simultáneamente en todo el mundo.
The movie will be released simultaneously all over the world.
Los dos atletas cruzaron la línea de meta simultáneamente.
The two athletes crossed the finish line at the same time.
How it's built
This word is formed by taking the feminine version of the adjective 'simultánea' and adding the ending '-mente', which is just like adding '-ly' in English.
Where to put it
You usually place this word after the action (verb) it describes, like 'ocurrió simultáneamente' (it happened simultaneously).
The Hidden Accent
Mistake: “Writing 'simultaneamente' without an accent.”
Correction: Always keep the accent from the original adjective: 'simultáneamente'. Even though the word is long, that 'á' stays stressed!
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