Not formal at all, never was. Okamoto twitted that Dana told him about it and that's it. If you have something more to show then go ahead.
Now, if you want to keep building the narrative that the Diaz bros pull out of fights while they've never done it, suit yourself but you better not be talking about shills... In the meantime, here's a reminder:
No comment from Dana about Poirier pulling out and also many sherdogers, while hating pull outs in general, stayed quiet about this one (oh, there were also a couple of threads that were trying to blame Nate). Dana managed to somehow turn Dustin's pull-out into a jab against Nate.