“Now with your Microsoft 365 subscription and Teams you can join group calls and talk for up to 30 hours uninterrupted with up to 300 people. No more worrying that time is going to run out too soon. You can take your time and keep the conversation going all-day long.”

If you get over your nightmares about talking to 300 people at once for thirty hours straight, you can devote some nightmare time to that hyphen in “all-day long.”