Expedia interview experience

I interviewed for an SDE2 position on 4/15. I thought it went super well, and it was even with the hiring manager! The HM told me to reach out early next week if I didn’t hear back (interview was on a Friday), so it seemed like they liked me! The following Wednesday I followed up with the recruiter, and received no response. One week after following up I tried following again with the recruiter, but received nothing. I’m struggling to believe I didn’t make the next round or at least prove to do well enough to deserve a rejection. Would it be out of pocket to try reaching out to scheduling or the HM on LinkedIn? PS: I felt like I got along quite well with the HM Tc: 95k YOE: 2