Per Nick Underhill: Dennis Allen spoke extensively about the red zone issues. Says it’s a combination of play calls, execution and coaching

everybody is looking for a culprit but what if it just takes time for this team to gel? it's only been 6 games and they have gradually gotten better. I'd say give it 3 more games before making any major moves.
How long has it taken the Texans to gel with a rookie QB and a rookie Head Coach?