It is not what you're asking for, so this is almost off topic but: to send tabs to my Android phone or from there to my laptop I share them manually with KDECon

It is not what you're asking for, so this is almost off topic but: to send tabs to my Android phone or from there to my laptop I share them manually with KDEConnect. It's Android, Linux, Windows. GNOME too with GSConnect. The rationale is that it doesn't make sense to have on my phone all the tabs I have on my work laptop. It's often not possible too: web apps on customers LANs and VPNs.