[sv-ec] unpacked array embedded in struct as wire type

How to interpret below LRM statement:

>If a data type is not specified in the net declaration, then the data type
of the net is logic.Certain restrictions apply to the data type of a net. A
valid data type for a net shall be one of the following:

>a) A 4-state integral type, including a packed array or packed struct

>b) An unpacked array or unpacked struct, where each element has a valid
data type for a net

Is it allowed to have net with type :  struct with unpacked array inside -
example:

typedef struct {reg a; reg [3:0] arr [10];} T;

wire T w;

Maybe LRM may be worded more precise here.

DANiel


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