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.
So who won the dispute as the next Sikh Guru, succeeding Guru Arjan, and became the Sixth Guru ?
The mainstream Sikh tradition recognised Guru Arjan as the fifth Guru, and Hargobind as the sixth Guru

Question: Are there any other interesting aspects about this article?
Self-contained rewrite: Are there any other interesting aspects about the Guru Arjan article?