Passage: Gnaeus Cornelius Scipio Calvus, with 20,000 infantry (2 Roman and 2 allied legions) 2,200 cavalry and 60 quinqueremes, sailed from Massilia and landed at Emporiae in Iberia. The Greek cities of Emporiae and Tarraco welcomed the Romans, and Gnaeus began to win over the Iberian tribes north of the Ebro. Hasdrubal Barca, after being warned of the Roman expedition, marched north with an army of 8,000 foot soldiers and 1,000 cavalry to join Hanno.

Question: Approximately how many different legions did Gnaesus sail with?
2 Roman and 2 allied legions