I am usually a *A flyer, but found a good F fare on Delta from CLT to LAX over the holidays and took it and figured I'd give Delta a try.

In the two months since I booked the flights, I've had my itinerary change five times. I had originally booked through ATL with a 767 to and from LAX. First, they changed the CLT-ATL flight, then the ATL-LAX flight switched to a later departure on a 767, then to a 757, then there was an equipment change on my ATL-CLT flight, and then the latest change, I am flying back through MEM on a 738 and a CR9 instead of through ATL.

I've never had so many changes to one itinerary. I'm on none of the original flights I booked. And I've still got a month and half to go until I actually leave. Is this normal?

Off topic - my connection in MEM is 46 minutes - is this doable?