As a member of a team of users in the MMC platform, when a segment download is requested, and the download link appears on the notifications page, another user could in fact click the download link which currently has the download link for the segment disappearing for further download attempts.
This can lead to the user who actually requested and needs the segment download, not having a download link to access and thus they would need to request the download of the segment again OR find out who downloaded it on their team and obtain from them.
A segment download link should persist for a period of time on the notifications page regardless of how man times it has been downloaded. Perhaps that could be 24-48 hours to allow for enough time for the user who requested the download to access the download.