parle

I'm talking Sikh not 'Hindoo' or Assyrian. Sikhs also had a gurdwara in Iran by the mid-1800s. There is no need to link anything with any region, Sikhs were there, plain and simple. Sikhs were prolific travellers, Guru Nanak set the standard for this. Despite what current histiography may tell you the Sikhs were moving across the world long before the British took control of Punjab. It needs to be understood Sikh communities were under the control of the British Empire by the 1750s.

Sikhs were in contact with Baghdad by the time of Guru Hargobind, though it was likely earlier. Sikhs had also reached Burma by the time of the third Guru. The Sikhs are first recorded in North America by 1780. Records before the 1700s are super difficult to find and disseminate In the early 1800s Sikhs were located around the Caspian sea as well. For Guru Nanak to have reached Italy is not a far fetch at all considering the amount of transportation infrastructure across the Middle East and by sea. The Guru did not necessarily need to walk across the Middle East, he could have taken transportation which was in ample supply. These are recorded by sources external to Sikhi.