Conversation so far:
Who succeeded Guru Arjan as Sikh Guru?
After his execution by the Muslim officials of the Mughal Empire, his son Hargobind became the sixth Guru in 1606 CE.

Question: So who won the dispute and became the Sixth Guru ?
Self-contained rewrite: So who won the dispute as the next Sikh Guru, succeeding Guru Arjan, and became the Sixth Guru ?