If on separate tickets, then no

It needs only a small delay before you will be arriving late at the Emirates gate such that you may well be refused boarding and end up having to pay penalties as a no show

If you are oin a flexible ticket with no penalty for no show and if you are denied boarding, then you are happy to take the next EK service to DXB, then fine

If you are on any other ticket, leaving less than 2-3 hours at least is too short

If you are on a through single ticketed itinerary, then as lon as it is a valid connection then fine