Yes, that is good. Also, quality of animation is increased, but you need to do something with backgrounds.

The female voice is pretty low like they are further from the microphone and the male voice is really loud as if they were close to it. The male voice seems so close that I am pretty sure I hear loud static poofs once or twice. Should try putting a pop filter in front of it or cutting a bit of panty hose to put over the mic to help reduce popping noises.

The animation seemed pretty smooth. The colors fit, although next time, maybe you could practice some shading and lighting, add shadows to the faces and all to show what direction the train is going in. Would make this much nicer I think.

Overall, not too bad, just practice in the future.

That's perfectly fine work, although the female voice had a substantially lower volume voice. The joke was legit and the punchline tasteful. Bit short, but if you keep linking characters, might be part of a greater whole... or something.

NG has a lot to offer animators who network, review and collaborate with others here, snag some background music from the Audio Portal next time around (even if you keep it low key). Also, the scenes look well framed, action shots, progressions, all good spot on and imaginative - try a high angle or low angle shot (or copy one's point of view/focus), next time around