Hey, The twitch extension needs to be active for the subs to count towards the bounty, therefore yes the streamer needs to be online at the time of gifting. [quote]The Destiny 2 Official Twitch Extension must be active on the channel in order for Gifted Sub bounty progress to be recorded. Viewers can see bounty progress by navigating to the Viewer Bounties tab of the extension overlay. Gifted Sub bounty progress can be spread across multiple streams.[/quote] For more information have a look at the below article. https://help.bungie.net/hc/en-us/articles/360048722432-Twitch-Extension-Support-for-Destiny-2#:~:text=The%20Destiny%202%20Official%20Twitch%20Extension%20must%20be%20active%20on,be%20spread%20across%20multiple%20streams.