Left-handed batsman Conway, recent from his sensible double hundred on debut at Lord’s in the opening check, smashed 12 boundaries for his 80 and alongside Young added 122 runs for the second wicket.
Young confirmed unimaginable endurance for his 82 off 204 balls earlier than he grew to become Dan Lawrence’s maiden Test wicket in the ultimate over of the day. The vacationers completed the day with Ross Taylor unbeaten on 46 at the opposite finish.
New Zealand’s stand-in skipper Tom Latham was trapped leg earlier than with simply 15 runs on the board earlier than Conway and Will Young went on to frustrate the English bowling assault.
Conway was spared on 22 when the South African-born batsman edged seamer Stuart Broad to Zak Crawley in the slips.
But with on-subject umpire Richard Kettleborough having made a smooth sign of not out, TV umpire Michael Gough determined there was inadequate proof for him to overturn that call.
Young, who changed injured skipper Kane Williamson in the highest order, ought to have been actually out for seven however England captain Joe Root dropped a seemingly snug probability at first slip regardless of getting each palms to the ball.
Conway missed out on one other triple-determine rating when he holed out to Broad in the ultimate session, however Young continued to indicate nice maturity at the opposite finish.
Young, enjoying solely his third check, constructed a 92-run partnership with Taylor as England struggled to make an affect with out a full-time spinner in their lineup.
Earlier, tailender Mark Wood’s flashy 41 helped England to 303 all out in their first innings, with Mark Lawrence ending unbeaten on 81.
Wood, who resumed on 16 not out, scored six boundaries earlier than edging a Matt Henry supply again onto his stumps.
On his return to motion, Trent Boult was the decide of the bowlers for the vacationers as he trapped James Anderson leg earlier than to complete with 4-85.