The idea is good but 2 things are not congruent:
- Stereo means that 2 complementary channels (Li and Re) imply the room sound. However, both devices are identical and not channel Li/Re separately ..... i.e. 2 devices will play identical music and thus not form a stereo sound
- Since both devices cannot possibly be started at exactly the same time (= streaming time), there will be a time offset in the streaming and thus also be audible, even if this is only a millisecond difference...... no harmonious sound image is created