Nov 12 episode turned to be much better in terms of expediting the relationship to the next stage though Avinesh's expressions are deadpan no offense. Not sure if this deadpan expression supposed to be part of his role till more deets are revealed. Yes, it's a bit unrealistic with the whole chat mangani pat byah over two episodes but the nuances are there. Krisha catching Devraj definitely raised a red flag in her mind before she dismissed the situation --- so it seems that something is going on beyond the mind.
Now, coming to the main part of this thread which is about the sibling bond of Krisha & her brother. I don't know but I like their sibling bond over teasing, having fun, etc. It looks so good.I think the actors also mentioned in a article that they share a sibling-like relationship offscreen recently or something along the lines. It's pretty much evident in the sibling relationship they share onscreen.