What effect, if any, does the filing of a detainer have on a prisoner's right to a speedy trial under the Sixth Amendment?

QUESTION(S) PRESENTED (1) What effect, if any, does the filing of a detainer have on a prisoner's right to a speedy trial under the Sixth Amendment? (2) To what degree are the three basic demands .of criminal justice under the Sixth Amendment speedy trial right "aggravated and compounded," in a case of an accused under a state charge who is imprisoned by another jurisdiction? See Smith v. Hooey, 393 U.S. 374 (1969). (3) What effect does an accused's imprisonment by another state have on a Barker v. Wingo, 407 U.S. 514 (1972), speedy trial analysis? (4) Does the filing of a detainer relieve prosecuting officials of the duty, under the Sixth Amendment, to provide an accused with a speedy trial? (5) Does the denial of access to rehabilitative programs constitute oppressive pretrial incarceration in a Barker analysis? (6) What constitutes an assertion of a prisoner's right to a speedy trial under the Sixth Amendment? -i