Well hmm. NASA decided Starliner wasn't safe enough to use for the return journey, so the astronauts stayed on the ISS until the next ride became available.
Originally the astronauts were supposed to go back on Starliner. Now they're taking another ride back. Is that considered a rescue? Well, it depends.
If you get left behind on an island because your ride wasn't safe and another boat picks you up, is that a rescue? Now what if you're 420 kilometers up and another boat has to come get you. Is that a rescue?
If there wasn't another ride from the ISS available, would the astronauts be stranded? Yes.
In that case, if a ride suddenly became available would it be considered a rescue? Probably, yes.
Originally the astronauts were supposed to go back on Starliner. Now they're taking another ride back. Is that considered a rescue? Well, it depends.
If you get left behind on an island because your ride wasn't safe and another boat picks you up, is that a rescue? Now what if you're 420 kilometers up and another boat has to come get you. Is that a rescue?
If there wasn't another ride from the ISS available, would the astronauts be stranded? Yes.
In that case, if a ride suddenly became available would it be considered a rescue? Probably, yes.