The correct answer to this open question is the following.
The legislative process could be different without a conference committee in that negotiations could come to a stall, hindering and delaying the passing of bills.
The conference committee is formed by members of both chambers of Congress. The important role of Conference Committees in the US Congress is to negotiate and resolve the many differences that could hinder the passing of a Bill in the lower chamber or House of Representatives and the Upper chamber or the Senate.