Learn French: Où que nous soyons, la connexion doit être stable. - Wherever we are, the connection must be stable.

The phrase où que (meaning "wherever" or "no matter where") always triggers the subjunctive. It sets up a concession, meaning a situation that remains true regardless of the location. In French, these "no matter [question word]" phrases require the subjunctive mood.

What is the difference between using où que here versus n'importe où?

Où que specifically introduces a dependent clause and requires a subject and a subjunctive verb immediately after it (où que nous soyons). If you use n'importe où (anywhere), it doesn't trigger the subjunctive and you would need to rephrase the sentence entirely, such as: Nous pouvons être n'importe où, la connexion doit être stable.

Is it a typo that connexion is spelled with an "x"?

No, it is perfectly correct! Unlike the English "connection," the French word connexion is always spelled with an x. While many English words ending in "-ction" share the exact same spelling in French (like action or direction), this one is a classic spelling trap for English speakers.

Could doit être mean "is probably" in this context?

The verb devoir can express probability (like "she must be here" meaning "she is probably here"). However, following the strong condition of où que nous soyons, this sentence expresses an absolute requirement or obligation. It means the connection "has to be" stable, rather than it "probably is" stable.