Question about XGIMI Horizon Pro

Short: No
Long: Connection would be from Apple TV to beamer and from beamer to Sonos Beam. For this to work, it needs an audio return channel, ARC for short. This beamer has this, so you will also receive sound from your Sonos Beam. If you want Dolby Atmos, however, you need an eARC (Enhanced Audio Return Channel) connection, which this projector does not have. As far as I know, there are practically no beamers with an eARC connection. That's why you probably can't do without an intermediate device such as HDFury Arcana. If you connect this in between, you can send Dolby Atmos quality audio from the Apple TV to the Sonos Beam and the picture to the projector.

Because I just read the question and read the misinformation. The projector has eARC.