The unified timeline is the whole point. However, for me, this app gets two things wrong:
1) I'd also want IM feeds on the same timeline. Like, Messenger, Teams, WhatsApp, etc. I know it's probably impossible due to how obstructionist and anti-user the chat vendors are, but I keep dreaming about it. Most chat conversations are, in my mind, in the same general category as HN links or incoming e-mail: "thing that I need to pay a minute of attention up front, and then possibly 15+ minutes dealing with".
2) It's iOS only.