"No sé si iremos en tren o en coche, pero , llegaremos a las ocho."

If starting a sentence, it is typically followed by a comma. It can range from casual conversation to formal writing. Similar Phrases

In everyday conversation and writing, "sea como sea" acts as a transition or a definitive closer.

: Used similarly to "anyway" or "regardless" after discussing different possibilities.

De todas formas (anyway), pase lo que pase (whatever happens), en cualquier caso (in any case).