Chromecast & Data Usage
PlannedObsolescence
Enthusiast - Level 2

This is more a data usage question, so apologies if posted to the wrong area.

Can anyone advise ref data usage for hotspot versus cellular when using Chromecast? I have no independent Internet other than a Galaxy smartphone w VZW unlimited cell data and 15GB hotspot. Apps on the phone (HBO, YouTube, etc) are set to use cell data. Chromecast requires a common network so I connect to the TV's built-in Chromecast via the phone's hotspot. This works beautifully - connecting is not an issue. The question is, when playing an app on the phone and casting with Chromecast, connected via hotspot to the TV, am I solely using cell data for the video, or am I burning through the limited hotspot data as well?

FYI, the screen mirror function recently stopped working (software update) so I can't do that to take the hotspot out of the equation. An HDMI connection to the TV could work, but due to limited cell reception (literally a matter of a few feet makes all the difference) that's not really usable either.

TIA

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