One thing I noticed is CN never accepted vinu as their own ....(not considering virat)....ashwini states she wants her son's child in her lap....waited for years ...blah blah...so does she love vinu as virat's child..nooo ...that's why she expected sai to tolerate pakhi during surrogacy .... she only wanted her son's blood ...
Coming to ninad....he says he sees virat happy after a lomg time....also sees a father in him....that means with vinu he never seen this attachment....but if I find some one sane it is ninad....even then they are happy because virat has a child....then who is vinu....so biological child is his child and adopted one just a child
Also coming to pakhi....she is herself saying what will happen to me.....vinu is only pawn to tie virat ....a real mother will think about child first....it was clearly depicted in sai's case...she got phone only for one call....instead of lawyer she called savi(unfortunately it was with UM)...
Bk the power hunger who doesn't think.about harini won't think about virat or others....frankly others only have a mere namesake relationship with virat..so I don't think they have any attachment with vinu

don't know why going through my gallery....I found some similarity on these two pic...