There exists a chapter 95 in the Adi Parva (chapter number may vary from version to version), the following shlokas will appear there. In this chapter the lineage of Purus was narrated by Vaisampayana. This chapter contains narrations, which Chapter 61 of Adi Parva does not contain.
These shlokas were taken from the BORI’s version. KMG version also contain these shlokas in the Chapter 90 of Adi Parva.
तस्यामेव शन्तनोर्द्वौ पुत्रौ बभूवतुः । चित्राङ्गदो विचित्रवीर्यश्च ।
तयोरप्राप्तयौवन एव चित्राङ्गदो गन्धर्वेण हतः ।
विचित्रवीर्यस्तु राजा समभवत् ।
विचित्रवीर्यः खलु कौसल्यात्मजेऽम्बिकाम्बालिके काशिराजदुहितरावुपयेमे ।
Santanu begot two other sons named Chitrangada and Vichitravirya. And before they attained to majority, Chitrangada had been slain by the Gandharvas. And, Vichitravirya became king.
Vichitravirya married the two daughters of the king of Kashi, named Ambika and Ambalika.
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I could not comprehend whether this chapter is an interpolated version - partially or fully, but I am quoting this chapter, as the narration of Vichitravirya’s marraige was told in brief.
Surprisingly, this chapter was retained by the BORI.
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The above shlokas mentions about Vichitravirya’s marraige with Ambika and Ambalika, but the name of another daughter of Kashi King, ie., Amba is missing.
Interestingly, this chapter does not talk about Bhishma abducting the daughters of Kashi King.
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If this chapter is a part of original version of Sage Vyasa, then Bhishma did not abduct the daughters of Kashi King. Vichitravirya’s marraige with Ambika and Ambalika ;might have happened as the marriage of any other king.
Thus, Amba as the daughter of Kashi King, the stories of her rivalry with Bhishma, Fight between Bhishma and Parashurama, Amba’s self immolation, etc, are interpolations.
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Thus, while dealing with Satyavati, Bhishma acts very politely and respectfully, though in the case of bringing Ambika and Ambalika for his brother, he overlooks Dharma and acts in an inapproprite manner, which highlights a sharp behavioral shift.
These interpolations were added to add Drama to Bhishma's acts, a karmic retribution in the form of Shikhandin, the re-born Amba.
