Proposed resolution:

This wording is relative to N5014.

1. Modify [exec.connect] as indicated:

   -5- Let `V` name the type await-result-type<DS, connect-awaitable-promise>, let `Sigs` name the type

   completion_signatures<
     SET-VALUE-SIG(V), // see [exec.snd.concepts]
     set_error_t(exception_ptr),
     set_stopped_t()>
   

   and let connect-awaitable be an exposition-only coroutine defined as follows:

   namespace std::execution {
     […]
     operation-state-task connect-awaitable(DS sndr, DR rcvr) requires receiver_of<DR, Sigs> {
       exception_ptr ep;
       try {
         if constexpr (same_as<V, void>is_void_v<V>) {
           co_await std::move(sndr);
           co_await suspend-complete(set_value, std::move(rcvr));
         } else {
           co_await suspend-complete(set_value, std::move(rcvr), co_await std::move(sndr));
         }
       } catch(...) {
         ep = current_exception();
       }
       co_await suspend-complete(set_error, std::move(rcvr), std::move(ep));
     }
   }  
   

The wording in [exec.connect] p5 defines the connect-awaitable() function as follows:

operation-state-task connect-awaitable(DS sndr, DR rcvr) requires receiver_of<DR, Sigs> {
  exception_ptr ep;
  try {
    if constexpr (same_as<V, void>) {
      co_await std::move(sndr);
      co_await suspend-complete(set_value, std::move(rcvr));
    } else {
      co_await suspend-complete(set_value, std::move(rcvr), co_await std::move(sndr));
    }
  } catch(...) {
    ep = current_exception();
  }
  co_await suspend-complete(set_error, std::move(rcvr), std::move(ep));
}

The use of same_as<V, void> in the if-constexpr condition does not cover the case where the result of the `co_await` expression has type cv `void`. It should use is_void_v<V> instead to allow it to match all `void` types, not just unqualified `void`.