AT&T Inc.’s proposed $108.7 billion acquisition of Time Warner Inc. figures to receive a robust regulatory review, one that should be a boon to professional advisers for both companies.

While the mega-deal has a path to approval, overcoming some initial political opposition will fall to teams of lawyers and lobbyists, with AT&T having nearly 100 registered lobbyists on its payroll. James Cicconi, a former Akin Gump Strauss Hauer & Feld partner serving as senior vice president for external and legislative affairs at AT&T, retired from the company in late September. Taking Cicconi’s place is former Mayer Brown litigator Robert Quinn Jr.