back-to-back
adjective [ before noun ]
uk/ˌbæktəˈbæk/ ushappening one after the other, with nothing between:
Optimists also point out that stocks posted hefty gains after back-to-back losses.
Homeowners were hit by the first back-to-back rise in interest rates in more than four years.
The firm had back-to-back quarters of strong earnings.