One navigation the screens core saw commit, as the app logs it: the
navigation before and after it, how the screen in front came there (the
chain entry's source, back for a return, the tab's source for a tab brought
back), the event's number in this process (seq), how deep the screen in
front sits in its stack (0 for a tab's root) and how long the move took. A
transition that pushed several chain entries is several moves, each with the
chain as it stood after that entry.
One navigation the screens core saw commit, as the app logs it: the navigation before and after it, how the screen in front came there (the chain entry's source,
backfor a return, the tab's source for a tab brought back), the event's number in this process (seq), how deep the screen in front sits in its stack (0 for a tab's root) and how long the move took. A transition that pushed several chain entries is several moves, each with the chain as it stood after that entry.