1. outlook has tasks 2. onenote has tasks 3. ms todo has tasks 4. ms project has tasks but is for heavyweight full time project mangers, not tasks like the r

1. outlook has tasks 2. onenote has tasks 3. ms todo has tasks 4. ms project has tasks but is for heavyweight full time project mangers, not tasks like the rest of these which are more like knowledge management action items 5. IDK about MS planner 6. MS loop is an enumeration of teams's groups + todo tasks + other integrations squeezed into a single UI by doing integrations, like in the old OLE days (https://en.wikipedia.org/wiki/Object_Linking_and_Embedding https://en.wikipedia.org/wiki/Object_Linking_and_Embedding) AFAICT, while leaving actual chats / meets to teams as you said