Ok first off:
Placing 2 snakes in the same cage is never a good idea, unless it is for breeding.
Placing a W/C snake with a C/B snake is even worse, because of all the parasites and possible pathogens the W/C can introduce to your C/B snake!!!
Corn snakes are by nature solitary creatures and do not co-habitate, so by housing them together you probably stressed them both out.
What are the temps you are keeping your snakes at? How long have you had the C/B snake?
Place something in between the snakes enclosures so they cannot see each other. Make sure they have a cool end (65-70F) and a warm end (75-80F) in their enclosures. A hide on each end and water. Leave your snakes alone for a few days to let them de-stress.
You might also want to monitor your C/B snake for any type of parasites/diseases it may have picked up from you W/C.
Brian
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RATS
1.0 Corn snake "Warpath"(KY locale)
1.0 Black rat snake "Havok" (KY locale)
1.1 Black rat snakes "Reaper and Mystique" (MO locale)
1.0 Albino Black rat snake "Malakai" (Dwight Good stock)
1.0 Everglades rat snake "Deadpool" (Dwight Good stock)
0.1 Greenish rat snake "Rogue" (Dwight Good stock)
1.0 Great plains rat snake "Reign Fire" (TX locale)
1.0 Grey rat snake "Punisher" (White oak phase)(Dwight Good stock)
RACERS
1.0 Eastern Yellow Belly racer "Nightcrawler" (MO locale)
KINGS
1.1 California king snake "Bandit" & "Moonstar" (Coastal phase)
1.1 Prairie king snakes "Bishop" & "Askani" (KY locale)
0.1 Black king snake "Domino" (KY locale)
1.1 Desert Kingsnakes "Gambit" & "Psylocke"
0.1 Florida Kingsnake "Shard"
0.1 Speckled Kingsnake "Haven"
MILKS
1.0 Eastern/red Milk intergrade "Cable" (KY locale)
1.0 Eastern/Red Milk intergrade "Omega Red" (KY locale)
BULLS/GOPHERS/PINES
0.1 Sonoran Gopher "Husk"
1.0 Kankakee bull (Phil Peak stock)
Good luck and Happy Herping
Brian