Can someone help me out with this interview dilemma?

Meet 2 people at 2nd round interview and forgot to ask for business card. Emailed the project manager who I met at the 1st round and asked for their email address. Haven’t heard from the project manager. What can I do now?

I am very sure the project manager and the hiring manager both liked me and that’s the reason why I got the 2nd chance.

Any opinion and advice are appreciated. Thank you very much!