It's unclear from the feature list - could this be used for offline message delivery in group chat? E.g. in a chatroom with 10 participants, when you connect, y

It's unclear from the feature list - could this be used for offline message delivery in group chat? E.g. in a chatroom with 10 participants, when you connect, you receive the messages you missed while you were offline (provided someone that has seen those messages is also online to relay them)