13.16G13 does not mean seven simultaneous notes

A very practical G13:

LH: G

RH: F B E

That's:

• root
• ♭7
• 3
• 13

Perfectly sufficient.

Sometimes add A:

RH: F A B E

Now you have:

7th, 9th, 3rd, 13th.

No 5th.

No 11th.

Still clearly G13.