Arks of Omen Allies

[L30n1d4s]

I understand several of the allied options previewed (i.e. Agents of the Imperium, Knights, and Votan patrols for Imperium, Harlequin Patrol for Aeldari, etc.), but am I missing something or is there now no way for an Arks of Omen detachment of, say, Space Marines, to take an allied patrol of Imperial Guard or, as a different example, Tyranids to take an allied patrol of Genestealer Cults?

[Emperor Ming]

Yes you are right, there are only very specific patrol detachments, nothing for tyranids

 

I'm not sure they will be popular, loosing certain rules on both factions is most likely not worth it

 

For example, if imperial guard take a Votann patrol, the Votann would loose grudge tokens, and the imperial guard would loose orders