ORY-CDG will count as a segment.
Transit between coterminals counts as a segment:
From the rules:
(h) A minimum of 3 and maximum of 16 segments, including surface segments between any 2 airports, are permitted for the entire journey. Free flight segments within each continent are limited as follows:
Africa 4
Asia 4
Europe Middle East 4*
*not more than 2 of which may be between the UK and ALBANIA, ALGERIA, BULGARIA, CROATIA, CYPRUS, GREECE, MIDDLE EAST, MOROCCO, ROMANIA, RUSSIA west of the Urals, TUNISIA, TURKEY, UKRAINE.
*segments between Europe and Middle East are not permitted if travel includes Africa and the itinerary utilises the backtracking provisions in Para 4.(e) 3.1.3. or 3.2.3.
North America 6
South America 4
South West Pacific 4
See also:
http://www.flyertalk.com/forum/onewo...gment-why.html
Q: What about surface segments (eg arrive at LGA and depart from JFK)?
A: These are counted towards the total of 16 segments.
http://www.flyertalk.com/forum/3024164-post1.html