I am moving my team to Microsoft Teams, and we are using a planner board to facilitate our discussions. In meetings, we have typically used agendas to facilitate an efficient meeting, and while eventually it is my goal to have my team use a planner board to drive the agenda, in the middle ground is it possible to link to a planner task in an O365 document hosted in the Teams file area, or perhaps in a wiki document? ihaven't tried the wiki document item.
Assuming the audience has access to the group / plan, you can just click the ... on a task, and copy link to task in the menu. This give's you a URL to the task via web planning which can be used in a document.