[i.h]

I gather that this is more a quirk of the way legacy Sky boxes work, that it must be transmitted in that way for it to be receivable on a Sky box. It doesn't seem to be the case in Italy (which has used similar legacy boxes to Sky UK) or Germany, so presumably Q doesn't need it & the much more open nature of 13E and 19.2E means they could never do it anyway.

And it's not as if Freesat would want to push to change it, they're quite happy with their own proprietary EPG data as it provides a way to enforce their licensing model with the manufacturers

It's still hard to claim piggybacking when the BBC uplink their own signals to a BBC owned transponder on an SES owned satellite. Even if it passes through a Sky owned mangler somewhere on its way up.