T-Mobile USA and Sprint Nextel have requested the Federal Communications Commission to pause its evaluation of Verizon Wireless’s acquisition of wireless spectrum from cable operators. The wireless operators are seeking additional transparency on the marketing agreements Verizon made with cable operators as part of the $3.6 billion deal struck late last year. They propose that the FCC delays its 180-day review until Verizon discloses more information about these deals.

Verizon Wireless inked a deal with Comcast, Time Warner Cable, Bright House Networks, and Cox Communications in December to purchase 20MHz of unused AWS wireless spectrum. Alongside the spectrum acquisition, Verizon also entered into marketing agreements with the cable companies. This includes provisions for cable operators to offer Verizon Wireless services as part of bundled packages and for Verizon to market cable broadband, TV, and voice services in its stores. Additionally, the agreement allows cable operators to access the Verizon Wireless network at wholesale rates in four years to sell wireless services under their own brands.

While some industry experts suggest that the marketing and resale aspects of the deal hold significant value, T-Mobile, Sprint, DirecTV, and consumer groups are seeking more clarity on these agreements. Verizon argues that it should not have to disclose the specifics of the deal in FCC filings as the U.S. Department of Justice is already reviewing comprehensive details. The redacted information in the FCC filings is aimed at safeguarding sensitive business data, according to Verizon.

T-Mobile and Sprint are concerned that the deal could result in Verizon amassing an excessive amount of wireless spectrum, given Verizon and AT&T’s dominant positions in the market compared to their own. Previously, regulators thwarted AT&T’s bid to acquire T-Mobile USA for $39 billion, indicating a history of scrutiny over consolidation in the wireless industry.