Guru Gobind Singh was the saviour of the cow.
All Sikh Gurus were married according to Hindu rituals.
The word mandir or temple in Swarnmandir or Harmandar shows the connection with Hindu tradition.
Guru Gobind Rai performed yajna at Naina Devi temple before establishing Khalsa panth.
Guru Ramdas' last will was to be cremated by Kesho Das Pandit and his remains were immersed in the Ganga at Hardwar.