Highly Trained Professional Sentai Teaming Up with "Amateur" Sentai in Crossovers

In the crossovers, some teams involved highly trained professionals teaming up with "amateurs" happened in:

Carranger vs. Ohranger- This series had the UAOH soldiers teaming up with regular civilians in the Carrangers.  

Dekaranger vs. Abaranger- The conflict was that the Abarangers were were not professionally trained Sentai warriors vs. the Dekarangers who used police principles.  The most enjoyable part is how the Dekarangers learned to loosen up, even Hoji Tomasu and Banban Akaza did learn something after all with the Abarangers.  

Magiranger vs. Dekaranger- The Special Police Dekaranger teamed up with the Magirangers.  Conflict was between Kai Ozu and Banban Akaza at the start.  However theyr ealized that they must team up to save their valuable teammates Urara Ozu and Marika Reimon as well as prevent Agent X from drowning the world into eternal darkness.

Gekiranger vs. Boukenger- Martial artists teaming up with a group of highly trained treasure hunters.  Conflict begins when professional treasure hunters try to understand the world of martial arts students.

Shinkenger vs. Go-onger- As Takeru Shiba would call Sosuke Esumi as an amateur.  The Shinkengers were highly trained samurai and well, I consider them as highly trained professional Sentai.  In the end, it worked out in defeating the infamous Gaiarc President Batcheed.