Could Tanaka command Japan's Mediterranean contingent?

Could Tanaka command Japan's Mediterranean contingent?

He would be too junior in 1940 for the proposed post.

Tanaka is proposed as a commander for the Japanese deployment, but his seniority in 1940 rules against it. The post would require a rear admiral or vice admiral. Experience and reputation in later wartime operations do not establish eligibility for the same command at this earlier date.