LURQUE MOAR, NEWFAG!
(I'll help you this one time).
So, "Delta" is the term used for the triangular shape made if you shaded in the area between the hands on a clock. Hence, if it was 12:15, the hour and minute hands would form an acute "[15] minute Delta". And, an obtuse, [45] minute Delta. However…
For the scope of our work, we're concerned with the Deltas between Q posts and POTUS tweets. Hence, if Q posts at 3:02pm and POTUS tweets at 3:07pm, we have a "[5] minute Delta". If Q posts at 6:04pm and POTUS tweets at 6:19pm, we have a "[15] minute Delta".
And of course, I'm using the "[ ]"s because that is what Q does to signal to us. So, if Q posts something and leaves a [15], we know that 15 minutes later POTUS will tweet. And, that tweet is relevant to the post, or some previous post.
Got it?