What if DHX Media buys New Fox

Since 21st Century Fox now spun off New Fox (which would become the small media company), why can New Fox be owned by Warner Bros. (via The CW)?

New Fox assets that will be owned by Warner Bros.

 * Fox Broadcasting Company (folded into The CW)
 * Fox Now (becomes The CW Now)
 * Fox Television Stations Group (becomes The CW Television Stations Group)
 * 28 stations
 * Fox Television Stations Productions (becomes The CW Television Stations)
 * MyNetworkTV
 * Movies! (50%)
 * Fox News Group (becomes The CW News Group)
 * Fox News Channel (becomes The CW News Channel)
 * Fox Business Network (becomes The CW Business Network)
 * Fox News Radio (becomes The CW News Radio)
 * Fox News Talk (becomes The CW News Talk)
 * Fox Nation (becomes The CW Nation)
 * Fox Sports Media Group (becomes The CW Sports Media Group)
 * Fox Sports (becomes The CW Sports)
 * FS1 (becomes CWS1)
 * FS2 (becomes CWS2)
 * Fox Deportes (becomes The CW Deportes)
 * Big Ten Network (51%)
 * Fox Soccer Plus (becomes The CW Soccer Plus)
 * Fox College Sports (becomes The CW College Sports)
 * Fox Sports Radio (becomes The CW Sports Radio)
 * Fox Sports Digital Media (becomes The CW Sports Digital Media)
 * FoxSports.com (becomes CWSports.com)
 * Fox Sports Go (becomes The CW Sports Go)
 * Home Team Sports (HTS) – advertising sales for sports channels including other regional sports networks plus commercial and program production, events, and local live custom brand integration
 * Fox Sports College Properties (becomes The CW Sports College Properties) – college rights holder for Big East Conference, several colleges: Michigan State, Auburn, San Diego State, Georgetown & USC and the Los Angeles Memorial Coliseum
 * Impression Sports & Entertainment – naming rights and event sponsorships.

New Fox assets that will not be owned by Warner Bros.

 * The 20th Century Fox studio lot (sold to The Walt Disney Company and become the 20th Century Fox museum)