Dolby Atmos, Lossless, Hi-Res Lossless, and that weird Automatic Setting

I recently fell in love with the Dolby Atmos feature on Apple Music. I

am also an audiophile with several amplifiers and grand speakers. I read

the automatic feature in Dolby Atmos settings that states a stereo

format is downloaded of the song as well so when connected to non

compatible devices; apple music will play the stereo version. If I have

my settings set to download songs at Dolby Atmos and Lossless, connect

my phone to my amplifiers that are not Dolby Atmos with the automatic

setting enabled, will the Lossless file be playing? Or is the stereo

version playing the Dolby Atmos quality, just without separation? The

reason I have this question is because the Dolby Atmos symbol disappears

without stating "Hi-Res Lossless" under the timeline of the song— it is

just blank.