Bhai Sahib Bhai Randhir Singh Ji mentions how the words " Har Har" together means continuous naam abhyiaas. Bhai Sahib Singh has mentioned in places where " Har Har" is an vismik ( interjection) then the word mean shaala/ rab kar ke ( God willing). He has given an example in the following pangti
ਹਰਿ ਹਰਿ ਤਿਨ ਕਾ ਦਰਸੁ ਨ ਕਰੀਅਹੁ ਜਿਨੀ ਹਰਿ ਹਰਿ ਨਾਮੁ ਨ ਧਿਆਇਆ ॥
Waaheguru what a wonderful pangti! But, in the following pangti I do not see how Har Har is an interjection nor can I see how Har Har means God willing?