House Speaker Robert DeLeo’s point-man in talks with the Senate over omnibus crime and sentencing legislation raised the prospect that the two sides could fail to reach agreement and suggested they consider passing a narrow bill that could win support. In a meeting with other lawmakers negotiating the bill, state Representative Eugene O’Flaherty wondered whether the Senate would be open to jettisoning the bulk of its proposal in favor of a plan that would crack down on habitual felons.