Is the catchphrase "Hasta la vista, baby" meant to be a nod to "I'll be back"

Co-writer co-writer William Wisher revealed its origins in a new featurette that was made to promote the 3D re-release of Terminator 2: Judgement Day:

Wisher reveals that "Hasta La Vista, baby" was just something that he and director James Cameron "used to say to each other when we were talking on the telephone, as we were hanging up... neither one of us ever had any idea that that line would become an iconic piece of dialogue."

(Note that you can view the featurette at the link.)

Sometimes things rhyme. I don't mean that in the "I'm a poet, and I didn't know it," vein, rather, in the "History doesn't repeat itself, but it does rhyme," whether it was said by Mark Twain or Joseph Anthony Wittreich. You can discover this rhythm if you listen to lots of music, see lots of art. I bet you and I use the same words, phrases, mannerisms in many of the same situations.

In the Rosary (doesn't matter if you are a believer or not) the similarities among some mysteries did not appear to me until I learned them in German, and only when I used "insertions" where the mysteries are announced in the "Hail Mary," not at the beginning of the decade. I had learned this is English, Spanish, and Latin, but only when I learned it in German did I see it.

Pattern recognition is a big part of life. Sometimes the pattern is obvious, sometimes it's hidden, and sometimes it's not there at all, but try telling your brain that. All this to say, no, I don't think you're blind. I think it was done in a flat, monotone which made them similar. Oh, and "Hasta la vista" is literally "Until the view," or more sensibly "Until we see each other again." (Thank God I didn't go into actual "references," where something actually is a nod to something else, often literary.)