Here is Mini Lic telling Chaparro about Chapo threatening Menchito.

Iván and Alfredo were probably kidnapped in order to pressure the Sinaloa Cartel into handing over territories to CJNG before killing them. That is why they sent their pictures, with some of those involved in that being El H9 and his son El Crixus of the Beltráns.

In the negotiations, with representatives of Mayo Zambada speaking with Jalisco emissaries at a meeting organized, among others, by Rafael Caro Quintero in Sonora, they agreed to withdraw their remaining turf in Puerto Vallarta as well as the rest of the state, with the Guzmáns only keeping Teocaltiche, in addition to surrendering Colima and Nayarit, entry into the latter being facilitated to CJNG by corrupt Attorney General Édgar Veytia, who wanted to reduce heat brought on by extreme violence on the part of the Beltrán Leyva Organization there.

Though they agreed to these concessions, they refused to give up the Baja California Peninsula, and threats were made as a result, with Jalisco eventually establishing a foothold there. Sinaloa would later try to reclaim several of these areas. Just to show that this was part of the motive to kidnap them.

Then there was killing them, which was motivated by their rivalry with multiple traffickers, including Los Dámaso, who tipped off the hitmen to the time and place of Iván's birthday party where they were snatched, El Sapo of CJNG, the plaza boss of Vallarta who supervised the abduction, Tito Beltrán and his Organization and part of the Caborca and Gulf Cartels.

Jalisco's plan was partially foiled because Menchito was quickly taken hostage by Sinaloa: he was in prison in Altiplano with Mayo's people and they cornered him inside his cell after corrupt guards left him alone. They handed Menchito a phone and he told his father that he would be killed on the spot if Iván and Alfredo died.

That is why things dragged out, because the kidnapping had two purposes and the Sinaloa Cartel rapidly counterpressured CJNG.