More likely after the first international break, so assuming we play first 3 away, we play 1 match at Wembley after the break (15-17th Sept) then you're looking at 22nd-24th Sept for the first match at NWHL
Wouldn't surprise me if our first CL match was away in that case, CL commences on the 18 and 19th September but then the 2nd set of matches are players on the 2nd/3rd October.
Are the CL dates actually drawn. I was always under impression once groups are drawn teams sort out the fixtures dates themselves. In that case CL shouldn’t be an issue.