Highlight Duplicates on same row

Can I get some assistance here.

So, on my attachment, on the tab named start, I receive a file with thousands of rows.
I want to look at column D and if the name repeats on the next row, then look over at column B and if the dates are the same for both rows, then highlight these two cells in each column.

The tab named "end result" is what I am looking for.
I want a formula and a VBA solution if possible, but prefer a VBA solution.

Thanks