Minor issue with Google Assistant and Logitech Harmony

I have this minor issue that, when I ask GA to “turn on” an Harmony activity, most of the time GA tells me that it cannot connect to HA, although the activity is actually turned on.
No issues with other switches.

I think that the cause is that GA is expecting some feedback from HA telling that the operation succeeded, but that, in specific cases, HA doesn’t respond or responds too late.
Maybe this process is synchronous and the Harmony integration itself takes too much time?

Not much of a problem, besides the annoying response of GA, but I’d like to go to the bottom of it.

If some have pointers on how GA in HA works, and where I should be looking, I’d be thankful.