Return rangs do combo the trick is to make the first hit whiff. try the f2,1,2. Then do low ex range. On return dash in and b1. Do the same combo w/o return range. You'll notice a difference in %.
Make sure you whiff on the range on the way out. But hit on the way in.
I know that, but the LOW ex boomerang doesn't guarantee a combo, the opponent can block before you attack... I tested it several times with all of her starters... It seems only the norm and AA boomerang guarantee a combo on hit on the rebound... That's so weird..
Oh and a new bnb reset 2 or 1 bars
jp 3 xx db2 dash b2 dash 4 xx EX db1 dash 4 xx df4 xx df4 41%... usually I can only get that damage with 3 bars since her nerf...
or
jp 3 xx db2 dash b2 dash 4 xx EX db1 dash 4 xx EX df1 --> reset
And also, it seems that you can't use the same ex boomerang twice in a combo... However, if the combo is initiated by the return of the boomerang, then you are allowed to use the same ex boomerang that you started the combo with, a second time in the combo
for instance, I've tried several times and on the second combo/reset, whenever I try DB1 ex a second time to whiff and reset, it either doesn't come out, or it is standard boomerang that doesn't return...
And just for funsies, my go to X-Ray combo...
midscreen
jp 3 xx db2 dash b2 dash 34 xx XRAY about 51% I THINK... (timing is tight)
corner is the same but with out the dash inputs and adding a njp after the db2
also, an XRAY combo off of u3 (that actually has awesome combo potential in the corner...)
jp u3 b32 xx XRAY or you can replace the b32 with 34... but like the other combo, timing is tight
EDIT: The low boomerang does guarantee off of f212... but it doesn't in my bnb reset... strange...
EDIT: You can throw in a 12 before the 34 in the
jp 3 xx db2 dash b2 dash 34 xx XRAY about 51% combo so that the timing is easier to land, but the damage is scaled to 47% (w/o jp).. with jp and 12 it is 50%
jp 3 xx db2 dash b2
dash 12 dash 34 xx XRAY 50%
EDIT: In any bnb combo (in the corner), after the njp b2, if you use 4 ex db1, the first throw will whiff, but the rebound guarantees a throw on high block if you use it immediately I believe...