I don't believe so. In fact, I am fairly certain that those supplements aren't even AL-legal (if you are talking the adventures that are kind of HC expansions/side quests). To make sure we are on the same page however, could you please provide a link to an example?
Since the requirement is for running adventures featuring the Death Curse, it seems fairly certain that the 100 hours for the Death Domain also needs to feature the Death Curse.
Yes, the DMs Guild Adept adventures are AL-legal, as noted by Chris Lindsay in this note on the WotC website.
No indication if those adventures count as hard-covers for the purpose of DM Quests that require hard-cover adventures, but I'm inclined to believe they don't -- the DM Quests were published in September 2017 and the guidance linked above wasn't posted until October 2017. In general, changes to the way DM Quests work aren't made in the middle of a season without explicit notification.
--
Pauper
DDHC “Hard Cover”; the seasonal releases that often take characters from 1-10+. May sometimes extend to other evergreen products, like Lost Mine of Phandelver
Looks like HC stands for Hard Cover...
Dedicated DM also specifies Hardcover sessions and Introductory adventures, though.
The special DDHC adventures would apply anytime Hardcover is mentioned, for DM Quests.
For adventures that allow you to roll random treasure, the DM does not roll, but instead may choose a +X weapon, +X armor, or consumable item appropriate for the tier being played. Note that what can and can't be taken as treasure in a hardcover adventure is spelled out in ALDMG and these follow those rules.
The special DDHC adventures would apply anytime Hardcover is mentioned, for DM Quests.