User blog comment:Kaido King of the Beasts/Chapter 843: Thundering and Lightning, Very Very Frightening (He's Just a Rich Boy From a Rich Family)/@comment-3529684-20161025102101/@comment-24850639-20161025155432

You shouldn't assume that it won't be, based on the sheer depth of characters that are going to get involved with this. The entire Donquixote Family needed to be accounted for before Luffy even got a shot to go at Doflamingo, and Big Mom has a MUCH larger army standing in Luffy's way. Considering that not only is Big Mom fully aware of Luffy's presence, but also that Luffy doesn't even have a plan yet, this is going to go on for quite a while. The planning stage doesnt start until the Luffy/Sanji situation is resolved, and then Luffy has to garner support for his plan to crash the wedding, after he has one. There's also still whatever additional backstory Oda is going to give us on Sanji, Jajji, and or course Big Mom herself.