Is that possible to host the recorded webinar but do the live Q&A at the same time?
Just want to make the attendees feel like it's a live webinar, and we can answer the questions in real-time.
Yes, that is correct. I rarely have phone-in Attendees.
Another option is to use a second computer to play the video and use something like the ATEM Mini to send the second computer's output to the webcam input of the main computer. This works only if there is spoken content, GoTo will make music will sound bad. Also this crops the edge of the video, but you can insert the video into a PowerPoint slide on the second computer and shrink the video size a little to avoid the cropping. All of this has been discussed in these discussions.