How much time does it take to get the listing?
That's really a nonsensical question, if you think about it.
How much time does it take to get a website suggestion from a website owner? Nobody knows, a website owner can decide to make a suggestion any time he feels like it. Does the ODP get a suggestion the day the site is published? Two years later? Never? It depends on when the owner decides to help editors find the site. And if the owner doesn't decide to suggest the site, some satisfied user might--all volunteering.
That seems perfectly simple, right? How could it be any other way? Why would anyone want it to be any other way. We could make rules, "Owners can only suggest their sites between June and November of the second calendar year following purchase of the domain name...." But that would be stupid, squared. Anyone can make suggestions anytime.
How much time does it take for a website to get listed, after it's first published (if no suggestion is made)? Nobody knows, a reviewer can find it anytime, it depends on when a volunteer decides to help users find that kind of site.
That seems perfectly simple, right? How could it be any other way? Again, we could make rules: "Editors can only list a site between 3 and 7 months after the site is published"...but how would that help anyone? It would just waste more time: every time an editor found a good site, he'd have to check the mickey-mouse requirements to see if he was ALLOWED to HELP the users by listing the site. Stupid, cubed. Instead, let people help, whenever they have time and ability and will.
Now, suppose one person wants to help, by doing one task. Great! But ... should that affect what other helpers can do, or when they can do it? Surely not. Again, we could make rules, but all of them would be off-the-map stupid.
So, basically, there's only one priority rule: don't show favoritism to your own sites.
Well, all of that seems pretty obvious, right?
But, if all that is true, How can anyone know when anything will happen? Nobody can.
Which is fine. What we know is that "more happens, because there are no artificial chronological barriers to everyone working whenever they can."