TPSM560R6: Options for paralleling two TPSM560R6

Part Number: TPSM560R6
Other Parts Discussed in Thread: TPSM5601R5

Fellow earthlings,

Two board variants: Variant A with approx. 0.4A max load, variant B with approx. 0.8A max load on the 3.3V rail.
Idea: Assembly one TPSM560R6 for option A, assemble both for Option B to essentially double the possible current delivered by the buck's. 

Is there any other method, than diode or-ing?
(Splitting the two rails into 3.3V/1 and 3.3V/2 ist not an option here,- thought of that already)

Best regards!