>>>>>Are you asserting that Ikazuchi was absent during the actual battle, but did arrive one day later, March 2, 1942, to rescue either 404 (TROM) or 442 (Wikipedia) British naval personnel? <<<<<<
Yes, absent that day and during the battle only.
>>>>>So, I’m assuming your contention is merely that Ikazuchi was not involved in the actual battle, but perhaps at the time was chasing down that Allied merchantman, which sank at S 6º 30', E 113º 00'. <<<<
Yes, that was (supposedly) the Dutch Kasuaris, and that location is only approx 26 miles north of Madura, i.e. well south of Bawean.
And the Augustina massacre just doesn’t seem to 'fit' with her then rescuing the other seamen a day or so later.
>>>>>Off the cuff, do you think the culprit came from the five DDs associated with the two IJN heavy cruiser groups?<<<<<<
No, not the four DD's present that day, nor Ikazuchi.
>>>>>Are you at all suspicious of DD Akebono?<<<<<<
If I recall, no.
More later (I hope)