(Q) Echo Dot used as soundbar no Firetv Stick

Hello from CR,

Does some body knows any skill to use 2 Echo Dots as stereo soundbar without FireTV Stick?

I reseached and it is possible to connect one Echo directly with my Android TV but it losses sync and just one Echo Dot sounds.

I am guessing it may be possible because headbuds connect each other and with another Android device through BlueTooth (more or less Android Phone --> Left Headbud --> Right Headbud)

Thanks for you time in advance