British Airways Boeing 777-336ER G-STBI operating BA297 London Heathrow – Chicago O’Hare diverted to Chicago Rockford this evening due to weather. The aircraft continued Chicago Rockford – Chicago O’Hare after midnight with this sector appearing to be operated by the scheduled crew of the BA296 Chicago – London Heathrow sector. As this crew did not have sufficient hours to continue to London Heathrow this service has been delayed until tomorrow afternoon.