They don't. But they could. Because they already know it all — based on what apps are legally allowed to collect about you. Lena is fictional. The data behind it is not.
Hey Lena,
you've been listening to a lot of Raye lately. Mostly in the evenings, between 9:30 PM and midnight. Often on repeat — the same song, multiple times in a row.
Based on that, we thought this playlist might suit you: "Late Night, Soft Feelings". Other users with similar patterns have been listening to it a lot recently.
— Your Spotify Team
Hey Lena,
on the night from Wednesday to Thursday you barely slept — just 2.5 hours, lots of restlessness. On Wednesday evening around 8:15 PM your heart rate briefly jumped to 112 bpm while you were sitting still.
Are you okay? If you'd like, check out the breathing exercises in the app.
— Your Xiaomi Health Team