I think the author is implying that they'll be figuring it out just like the first bite of the prey
There'll be a lot of back and forth foreplay and I think that's a hard sell to write about because, as you've shown, people are impatient about the fucking so if the mangaka wants anything to play out as per the canon in their head then one strategy is to add another subplot that's relevant to them... And at this stage it feels like another writing project rather than a drawing one
Use your imagination, I'm sure you'll enjoy Hati nursing Grant and begging him for a mate bite before they die or go on a dangerous fight or confrontation (IF that's cannon for the author)
Maybe I’ve been stained by all the filth I’ve been reading but where is the f*cking. Pity.