In the follow sentance someone is reporting back what was said to them.
"donc, au beau milieu de la nuit tu serais allé boire un verre d'eau et tu aurais vu une soucoupe volante dans le jardin, excuse-moi!"
Why is the conditional being used here instead of the passe compose. And if I were to speak this sentance using the passe compose would it be incorrect. Thanks.