In one book of a trilogy (all supposed to be identical format, of course) the TOC includes itself (page i) as its first line. The other two books ignore the TOC when in the TOC.
Diligent searching fails to reveal the “don’t include me in TOC” option.
BTW, this line intrudes if I ask for just the first level (chapter names) or the first three levels (chapter names plus names of scenes within chapters).
TIA