[Caprimaniac]

x2 on what Chas says.

If you've got the AN line lined up & ready, I'd use a clamp of some kind, not an AN fitting.

But, if you are insisting on AN.... Cut the flare off the fuel pump end. Install hard line adapter & flare once more. Put on AN hose end on hose and use the appropriate adapter from hose to fuel pump. (Hose look like AN6 and pump will be AN4? So then you need AN6 to AN4 male/male adapter....)