Google sheet conditional format rules/macro for duplicating rows (multiple conditions)

Job ID: 35916725

Budget: $250 – $750 SGD

I want to find duplicates from a template that I use.
I want to find 3 types of duplicates
- Same link (column A) + Same beginning timestamp(column B)
- Same link + Same ending timestamp (column C)
- Same link + Same ending & beginning timestamps

If links are same, that's OK as long as beg/ending timestamps are different.