simultaneous

In the link I posted below, the scanner is recieving and playing transmission after transmission with absolutely no pauses in between. Is this because the user is in an area with multiple sites going at once with heavy radio traffic or is there some kind of setting or mode that enables...

I've done all manner of Google , forum/RR and SDR related searches for this but have come up with nothing. I've heard several BC feeds that receive a ton of talkgroups or maybe even a mix of conventional and digital transmissions, and they somehow record the whole mess and then streams them out...