Ask HN: Is it okay to interview with two YC companies in the same time?

I strongly recommend interviewing with as many companies as possible. You are under no obligation to disclose that you are interviewing to anyone.

"You are under no obligation to disclose that you are interviewing to anyone."

Maybe your spouse...

I think they are already aware that if you are looking for a job, it's likely that you'll have others interviews. You don't have to "disclose" anything, it is obvious to anyone imo.

Yes, it is ok. I'm not sure why it wouldn't be.

You should be interviewing with as many companies as you can, not just one and hoping you get the job.

They are just another company - you treat them as the same from the perspective of the interviewee.

Simple: Tell them if and only if it puts you at an advantage.