SELECT ABS((SELECT "year" FROM table_204_970 WHERE "category" = 'best actor' AND "award" = 'academy award') - (SELECT "year" FROM table_204_970 WHERE "award" = 'screen actors guild life achievement award'))
how long after his first best actor academy award , did mr. borgnine receive his screen actors guild life acheivement award ?
CREATE TABLE table_204_970 (
    id number,
    "year" number,
    "award" text,
    "category" text,
    "title" text,
    "result" text
)