Throw in alignment

[bseybs32]

Team A aligns players perpendicular to the end line, chest to back, for a throw-in. Team B coach requests their players be allowed to insert between team A players. Do we as officials grant the team B coaches request?

After asking 12 officials, the results were 10 grant team B request and 2 deny request. Can't find rule or case play that confirms either response.

I've only found this rule which relates to alignment parallel to end line;

RULE 7 SECTION 6 ART. 5

Teammates shall not occupy adjacent positions which are *parallel to and within 3 feet of the boundary line if an opponent desires one of the *positions. The 3-foot restraining line is sometimes the temporary boundary line as in 1-2-2.