Which laptop/tablet signal is recorded to the cloud when co-hosting?

We are using Zoom Meeting and "record to cloud" and I am co-hosting. I join her in her meeting room, she sets the Spotlight on herself, then makes me her co-host and begins the class. From there,  I continue letting attendees into her room and at a certain moment in the class, as co-host, I start to record to the cloud.

We got a recording with a lot of freezes and we need to know if upgrading her outbound signal will solve the problem.

Is Zoom recording what my laptop is experiencing/relaying or what her tablet is beaming?  In a way this seems a dumb question (apols) because we know it is her camera and microphone, beaming from her tablet to all of us, but I genuinely would like to know if the Zoom Record function is just receiving/recording directly from her tablet's output, just like each of us as participants, or if the recording involves my internet signal with my laptop as a relay to the cloud recording function.