No, you need a separate todo list. Slack/Teams are not living documents, there are an ephemeral stream of async messages. That is fundamentally different than a

No, you need a separate todo list. Slack/Teams are not living documents, there are an ephemeral stream of async messages. That is fundamentally different than a to do list, which is a semi-permanent list that only changes with direct action from its owner. Copy / paste is your friend in this case. (And yes, I'm generalizing and you can make these apps into things they are not. But life is better if you don't.)