Explain this AI behavior (2 concurrent task forces)

[difool2]

May '41, I get the all-points Bismarck distress call on the 27th (doing my alt history XXI career in GWX 2.0). I run headlong at surfaced flank speed towards said location, and encounter not only 2 heavy cruisers (County class), but a KGV class BB (perhaps the lead ship herself) right around the time of the Bismarck's real-life demise. The CA's are operating about 3000 yards ahead of the BB, and at first I assumed they were all part of the same task force. But the BB almost collided with one of the cruisers, and then proceeded on her merry way east while the cruisers went off at about 90 degrees off the BB's starboard bow.

Eventually I get in position to intercept the BB, and fire four torps and sink her, avenging the Bismarck's death:arrgh!:. The weird thing happened afterwards, when the cruisers inexplicably slowed from their 21 knot cruise down to 10 knots, and started to meander in my general direction (about only 5,000 meters from the spot where the KGV went down in fact), doing lazy looping zigzags all the while. Of course I was then able to easily sink them too. What was going on here-did they "think" they had DD capability (umm no depth charge racks) and were attempting to "stalk" me? Why not call in Coastal Air and some nearby DD's while bugging off at high speed in the opposite direction? Or do distant ships farther apart than c. 5,000 m never "talk" to one another?

[Kptlt. Siegmann]

I thought some CLs were equipped with DCs? I know the Southampton's are, they've DCed me in game before.

[bigboywooly]

No
There are no CLs with DC ingame
We did think of adding them to the eqp files for the Southhamptons as have read a few accounts of them dropping DCs on sub targets
However there is never a mention of any in the ship armament listings so we werent sure whether they used launchers or racks

The CL in game do tend to act like an escort in that respect but of course lack any DCs

[Kptlt. Siegmann]

No
There are no CLs with DC ingame
We did think of adding them to the eqp files for the Southhamptons as have read a few accounts of them dropping DCs on sub targets
However there is never a mention of any in the ship armament listings so we werent sure whether they used launchers or racks

The CL in game do tend to act like an escort in that respect but of course lack any DCs
I must go get a picture then. I was pretty darn sure that was a Southampton that DCed me in game, which I promptly suck right after that for retaliation. I'll report my findings next time I run into one.

Edit: You're probably right, but I still want to find out for myself.