This is what I gather from your description and files:
Code:
angle1 = english, angle2 = japanese
chapter = program (in Titles pane)
Domain Content View at VTS level (layout as shown)
--------------------------------------------------
BLOCK 1 BLOCK 2 BLOCK 3
angle1/ilvu1 - c12(end credits)ch8,v/c:16/1 c14(preview)ch9,v/c:16/2 c16(char wrapup)ch10,v/c:16/3
angle2/ilvu2 - c13(end credits)ch8,v/c:17/1 c15(preview)ch9,v/c:17/2 c17(char wrapup)ch10,v/c:17/3
angle1/ilvu3 - c18(intro)ch11,v/c:18/1 c20(open credits)ch12,v/c:18/2 c22(name & num)ch13,v/c:18/3
angle2/ilvu4 - c19(intro)ch11,v/c:19/1 c21(open credits)ch12,v/c:19/2 c23(name & num)ch13,v/c:19/3 Now I understand why you say this:
Frankly, I don't think it should display this way at VTS level. It should display in order of V/C with angle. So I think the Intro/Open credits/Name & Number should display as Blocks 4/5/6 with 2 ILVU 3/4 tabs. At Program Chains level, the blocks are in order of PGC/V/C. This way you'll be less confused.
If you go to the PGC view, Programs pane, it displays sequentially. IMO, Bandai should not authored the Intro/Open credits/Name & Num as ILVU 3/4, but as ILVU 1/2.
Ignore my strategy, b/c you were mentioning 4 angles, apparently they are not.
Since your intention is to remove the opening and ending credits, it's best you do it in the Programs pane, not in the Domain Content View. If you delete the block, you'll see the highlighted red error. Just delete the now unreferenced chapter and hide the respective buttons in the Chapters menu. If you hide the block, there probably be a very quick black screen upon playback. But please try both as I think there might be a bug when I'm doing a quick test. For episode 2, use Delete method. For episode 3, use Hide method. Test playback and let us know how it goes. You're probably the first reported to try delete/hide a portion of the interleaved multi-angle block. Users usually just strip angles. It's easier.