Behold! I have come out of lurking to share what I know about Adachi's slide route.
I've been testing the slide quite a bit over the weekend and Red's correct in terms the juggle is very important to get 236BB to slide. However there are 2 other factors I observed that affect whether or not the juggle causes a satysfing slide or a dissapointing throw; the height of when you land your 5B to into 2C>J.C>stuff and your opponents hit box. Here's what I mean;
Red's corner 3538 dmg is good, but I can make it slightly better by adding a 5C after first 5B to make; Corner Sweep>SBGunshot>5B>5C>2C>Hop>delayJ.C>236BB>5B>2B>J.2C>J2.D.
This does 3902 dmg w/out Riser and 4290 with Riser. The caveat is this combo works on everyone but Kanji, Yukiko and both Shos (can't test on Margaret, don't have her). Against those 4 you omit the 5C I added otherwise it will always grab. A similar route with same rules can be done off of a 5D starter for all the unblockable enthusiasts. Corner or Close to it>5D>5B>5C>2C>Hop>delayJ.C>236BB>5B>2B>J.2C>214A(3297 dmg w/out riser, 3621 dmg with).
The height thing comes in when you're doing more advanced combos. With sweep or 5D its very easy to get a consistant height with your 5B when you hit them, this is harder to do (for me anyway) with combos where you connect it off of 236236B. So for example: 5AA>5B>5C(1)>236AA>236236B>5B>stuff into slide. I found that if 5B hits them too low you will have to adjust your J.C timing to be a bit sooner, otherwise it will likely grab. But anyway, those are my observations on the slide route so far. Its good damage wise, but can be very finnicky depending on combo routes. Online lag will likely kill me.
Also on the topic of poison; I've eyeballed it and I believe poison off of 5C or J.C under mandala will deal about 100dmg per second, over 5 seconds. So that's 500 "invisible" damage on top of your combo if you have at least 1 5C/J.C in it. The time refreshes for every subsequent 5C/J.C, effectively increasing Adachi's combo dmg by a good 600-800 dmg from the sweep/5D combos alone. You can probably get more if you had a good counter or fatal starter with lots of C buttons in it. Anyway that's all I got, back to obscurity.