MAX17250 is not suggested to be used with common VL connected between two systems
Bypass capacitors are used to stabilize LDO's, any voltage variations between the two might create a problem where one VL might act as source and other VL as sink. It is not guaranteed that the VL values variations are same for both devices. Iset has logic integrated with VL, different values of Iset and connecting VL of two different system might cause trouble with the output.