The examples in the Logos Now forum use AND as the operator
e.g. {Addressee <Person Disciples>} {Speaker <Person Jesus>}
which works ok for Bible & Morph Search, but not Basic Search. So I used:
{Addressee <Person Disciples>} WITHIN {Speaker <Person Jesus>}
which seems to work ok!
But when I used it in Bible Search I noticed a missing verse, John 16:17 in ESV.

Why missing from ESV (and other RI's?) and why does LEB highlight a different part to the others? Why only one result when there are two parts for Jesus speaking to the disciples?