Recovering a missing portion of a webinar recording

I was the host of a webinar where the Interpretation feature was enabled for Spanish. One of my colleagues was recording the session locally on her computer (not to the cloud) while listening to the Spanish interpretation channel as a guest participant.

During the webinar, there was an issue related to the VPN connection on her work computer. Although she remained in the session, the local recording stopped unexpectedly. Once she noticed the issue, she manually started the recording again.

Unfortunately, only the second part of the recording was saved, and we appear to have lost approximately one hour from the beginning of the webinar.

We would like to know whether there is any way to recover the missing portion of the local recording. Is it possible that temporary recording files were created and could still be recovered, or are there any troubleshooting steps you would recommend?