15A- End job without resistance and join again ( 5 ) R???E
19A- Steak cooked by Etonians, those who might progress rapidly
( 13 ) S?A?E???R?E?S
16D- End job without resistance and join again ( 5 ) R???E
1st letter of 16D is middle letter of 15A and last letter is middle of 19A
Many thanks in advance