An exhaust system for an apparatus generating a hot exhaust stream, the exhaust system comprising: a. an exhaust flow path liner surrounding and defining an exhaust flow path; b. a first structural duct segment having an entry end and an opposed exit end, a second structural duct segment having an entry end and an opposed exit end, the structural duct segments (64, 70) each including at each entry (66, 72) and exit end (68, 74) junction flanges (76, 80) extending about perpendicular to and away from interior flow surfaces of the duct segments so that a first junction flange at the exit end of the first duct segment is configured to mate with a second junction flange at the entry end of the second duct segment to secure the structural duct segments together, whereby the adjacent first and second junction flanges (76, 80) of the structural duct segments (64, 70) cooperatively define a capture nest; and, c. at least one link for securing the mated first and second structural duct segments to the exhaust flow path liner, the link including; i. a stem extending between a liner end and an opposed duct end; ii. the duct end including a lock member, the lock member being configured to be secured within the capture nest so that the stem of the link extends out of the capture nest in a direction away from the lock member and toward the exhaust flow liner; and, iii. the liner end including a catch member configured to be secured to a liner node defined at the exhaust flow path liner so that the link secures the exhaust flow path liner to the structural duct segments (64,70); characterised in that: the lock member has a diameter greater than a width of the stem. a. an exhaust flow path liner surrounding and defining an exhaust flow path; b. a first structural duct segment having an entry end and an opposed exit end, a second structural duct segment having an entry end and an opposed exit end, the structural duct segments (64, 70) each including at each entry (66, 72) and exit end (68, 74) junction flanges (76, 80) extending about perpendicular to and away from interior flow surfaces of the duct segments so that a first junction flange at the exit end of the first duct segment is configured to mate with a second junction flange at the entry end of the second duct segment to secure the structural duct segments together, whereby the adjacent first and second junction flanges (76, 80) of the structural duct segments (64, 70) cooperatively define a capture nest; and, c. at least one link for securing the mated first and second structural duct segments to the exhaust flow path liner, the link including; i. a stem extending between a liner end and an opposed duct end; ii. the duct end including a lock member, the lock member being configured to be secured within the capture nest so that the stem of the link extends out of the capture nest in a direction away from the lock member and toward the exhaust flow liner; and, iii. the liner end including a catch member configured to be secured to a liner node defined at the exhaust flow path liner so that the link secures the exhaust flow path liner to the structural duct segments (64,70); characterised in that: the lock member has a diameter greater than a width of the stem. i. a stem extending between a liner end and an opposed duct end; ii. the duct end including a lock member, the lock member being configured to be secured within the capture nest so that the stem of the link extends out of the capture nest in a direction away from the lock member and toward the exhaust flow liner; and, iii. the liner end including a catch member configured to be secured to a liner node defined at the exhaust flow path liner so that the link secures the exhaust flow path liner to the structural duct segments (64,70); the lock member has a diameter greater than a width of the stem.