having re-watched the preview clip a couple more times, i understand now where my disappointment came from.. i thought they would continue their heated rows in public... to make the reveal more dramatic lolz... villagers go: so that's why their rows were a bit odd, lolz
but now i get it, it's a plot device for robert to look elsewhere (Cain) as aaron is just winding him up... but this time they're not as angry at each other.. aaron having had his laugh is now softening for the much awaited rescue
robron elements? rob gets an excuse to confront aaron.. the fact aaron winds rob up..

they're not that combative as before as seen in the softening of their features whilst "arguing" (little smiles?)
when i said before that i'd rather they did the scene in public.. just realised they were not entirely alone in the scene.. coz that's the cup of truth tea aaron is holding between them.. until robert gets the truth tea onside, it would be where it is, between them...