xyzzy- I did that search and found nothing saying there was an open tunnel from T7 to T6 and where it was. One of the threads speaks to walking airside, but I'm not sure what that means.
Cova refers to going from T6 to T7, which I will carry with me to see if someone there can direct me to the reverse path, that is from T7 to T6.
Lots of discussion but mostly it degrades to the pitiful LAX TSAs.