Hw7 - doing the steps in the other order creates a similar issue with that letter as then the short thematic is no longer a word.
Either it is all meant to be done at the same time or there is another 5 letter thematic in the grid.....but there isn’t one in Chambers as far as I can tell.
Anyway, I enjoyed the puzzle and this must be the solution so will leave it there and crack on with looking after two little ones in the pouring rain!