Hi Chris,
In my experience the Trav brochure always appears several weeks before the JY one. I've been fairly quick to make some constructive criticisms of JY/Trav over the last while, but I will say one big thing in their favour. Living in the outpost of civilisation that is Ireland (apparently), JY and Trav send me brochures without any difficulty, whereas another big travel company, named after a famous author, won't send me brochures unless I go on bended knee!! God only knows what chaos and difficulty we will face after the disaster that is Brexit...
Cheers,
Bob