@Alison1242
You cannot have the same listing listed under the same host or two different hosts unless: 1) the listing is for separate bedrooms or for two separate units that are on the same property and can be rented separately or at the same time (of which I’ve seen hosts list a suite A, suite B, suite C, and suite A,B,C - entire home).
I know many hosts may have tried a new listing keeping both the old and new active with the same pics and different write ups to see if the new listing will generate more bookings and it looks odd when a guest is searching as it looks like you have multiple listings and can get confusing. Unfortunately it is against Airbnb terms and conditions even if there are people doing it. Eventually the system will flag their listing and they will get suspended (like a host here recently did even though they were trying to do a work around as well).
I know a host who transferred their listings after they sold their home and they probably did the cohost way then gave them the entire listing. I have read though that Airbnb says the new host needs a new listing as the reviews although for the same property, were linked to the old host, their way of decorating, and their communication style and hosting style.
I’d consider what @Marie8425 said as that seems like a good solution.