Mike, the drawing you posted shows Nagato as she looked in October 1944 during the Leyte Gulf operation. The drawing I've just posted shows her in Mid-June 1944 instead.
The full AA (98 25mm MGs) and radar (type 13/21/22) fit, was not fitted until her return to Kure after the Battle of the Philippine sea, from June 27 to July 8.
Also, pothograpic evidence show that since 1943 the lower bridge level windows were either removed or made removable (
Here, Showa-16, 1941: Windows. Showa-18, 1943: no more windows) , despite many drawings still features them even as late as October 1944, which
this picture showing Nagato in Brunei (one of my main references for her Leyte Gulf fit which I'll post in the next weeks hopefully) proves wrong, other than showing no flag flying from the bow staff.