Just a few points to consider.
Can it be confirmed that the cooker is designed and set to work on mains gas?
Are you sure the cooker and connection have no leaks?
Is the existing wall connection been tested for safe working?
Can it be confirmed that the cooker is designed and set to work on mains gas?
Are you sure the cooker and connection have no leaks?
Is the existing wall connection been tested for safe working?