0pt0 - following the rubric..
a) clue answers are split into 2 fragments containing 1 to 6 letters
b) first fragment in each answer is entered at the numbered clue
c) all real words or names
SO
1) only one possible entry at 24a
2) column 1 and column 12 MUST be formed of 2 6-letter fragments which limits possibilities. One crosses with 24a; another likely contains the other part of 24a.
ALSO, most - but not all - of the 2-letter answers contain 2 fragments, one from the first answer and one from the second. Look at, eg, 5d, 22d, 13a, 25a.
Good luck!