Please help me fix Costco’s (literal) shortcoming

1/2” MIP x 3/8” FIP help, please :)

We bought new laundry appliances from Costco. Their installers couldn’t have been nicer and did a generally great job. However they didn’t have a long enough gas dryer connector to allow for optimal placement of both machines. (Door hinges are currently in the middle instead of the outside of the pair. Maybe you’re normal, but this is the kind of thing that will eventually make me lose my mind.) The lead installer said he’s in the area frequently and that we can buy our own replacement and reach out to him directly once we have the longer hose. I snapped a pic of the package of the connector they installed, thinking this would be the easiest thing in the world to replace. Aaaaand I’m here because that has not been my experience. Can anyone tell me if a 60” connector (or longer, I suppose? I’d hate to be in this position AGAIN) with these dimensions exists, and where I can buy it? I don’t want to assume on dimensions or adaptors since a pro is making a special trip. I’m fairly handy but don’t mess with gas, and I’d appreciate a crowd-sourced Reddit solution rather than trusting one random person at a big box store. Thank you!

1/2” MIP x 3/8” FIP help, please :)

We bought new laundry appliances from Costco. Their installers couldn’t have been nicer and did a generally great job. However they didn’t have a long enough gas dryer connector to allow for optimal placement of both machines. (Door hinges are currently in the middle instead of the outside of the pair. Maybe you’re normal, but this is the kind of thing that will eventually make me lose my mind.) The lead installer said he’s in the area frequently and that we can buy our own replacement and reach out to him directly once we have the longer hose. I snapped a pic of the package of the connector they installed, thinking this would be the easiest thing in the world to replace. Aaaaand I’m here because that has not been my experience. Can anyone tell me if a 60” connector (or longer, I suppose? I’d hate to be in this position AGAIN) with these dimensions exists, and where I can buy it? I don’t want to assume on dimensions or adaptors since a pro is making a special trip. I’m fairly handy but don’t mess with gas, and I’d appreciate a crowd-sourced Reddit solution rather than trusting one random person at a big box store. Thank you!