Using RMAN to move from Windows2003 (10.2.0.5) to Linux 6.7 (12.1.0.2)
(Doc ID 369644.1) does not specifically reference this action.
RMAN DUPLICATE/RESTORE/RECOVER Mixed Platform Support (Doc ID 1079563.1) provides some rules. Windows <> Linux only for database versions 11.1 and greater.
Looking for confirmation this action is not possible utilizing RMAN