Aircraft with unconfirmed TOBT are given higher priority than aircraft with confirmed TOBT.
In the following example, DLH56C does not yet have a confirmed TOBT, but gets TSAT=TOBT, while MUC4Z with confirmed TOBT 1920 gets delayed to 1926 and SWR32 with confirmed TOBT 1918 also gets delayed to 1926.
Aircraft with unconfirmed TOBT are given higher priority than aircraft with confirmed TOBT.
In the following example, DLH56C does not yet have a confirmed TOBT, but gets TSAT=TOBT, while MUC4Z with confirmed TOBT 1920 gets delayed to 1926 and SWR32 with confirmed TOBT 1918 also gets delayed to 1926.