Board Thread:Support Requests - Getting Technical/@comment-26569706-20200117011330/@comment-9605025-20200117082646

The request format you used is for unidirectional linking. This means, if you request linking wikiA to wikiB, an interwiki link will be made on wikiB to get to wikiA but no interwiki link will be made on wikiA to get to wikiB. Likewise, if you use the same format to also request that wikiA be linked to wikiC, wikiC will be given an interwiki link to wikiA but not to wikiB. Also, wikiA and wikiB will not be given interwiki links to wikiC.

From the instructions: For joining only two or three wikis, add the InterwikiLink template once for each link, as each one is created independently (1:1). For large requests, make a list with each wiki on a separate line.