The reason why Kanachan and Aquachan's dialogue scenes were cut so much and ended so quickly compared to the original is that
Aquachan had foreseen what would ultimately happen, and by cutting out the series of lines that could be interpreted as Aquachan's confession, he lightened Kanachan's feelings and reduced the final psychological shock. I also came up with this theory.
I feel like this makes more sense.

Consideration for Kana-chan? | 四宮千奏@有馬かな推し！！'s post