The first word of the thematic phrase is 'indicated' by association with the puzzle's ... (the first word of the down clues message). The second word is given directly (I'm sure you know what the phrase is, adeano).
The final two words of the down clues message describes where some things are, and the preamble tells us what the things are ('the phrase's initials'). So, in the grid, the phrases initials are the ... ... (last two words of the down clues message).