England coach Andy Robinson hopes to put his British & Irish Lions experience to good use when he returns to work with the world champions.
Robinson was criticised in some quarters for joining Sir Clive Woodward's Lions coaching staff in New Zealand, rather than working with England on their summer Churchill Cup trip to Canada.
England won that tournament without him and their next assignments are two demanding November Tests against the All Blacks and Australia.
Robinson, though, believes lessons will be learnt from the Lions' 3-0 series defeat, in which New Zealand scored 107 points and 12 tries.
''I was criticised for coming here, rather than being with the England side for the Churchill Cup in Canada, but what I've learnt from here will benefit England,'' he said.
''You can't switch it on and off like a light. We need to go home and learn from this.
''We got punished for our mistakes by a very streetwise side, and we needed to be more streetwise ourselves. It is often easier to achieve that as a national side that gets much more time together.
''When New Zealand come to Twickenham in the autumn, we know now they are going to be a major enemy of ours heading into the World Cup.''
Ireland lock Paul O'Connell, meanwhile, says the Lions have to take collective responsibility for their disappointing New Zealand expedition.
The All Blacks posted three emphatic victories - 21-3, 48-18 and latterly 38-19 at Eden Park, when tries from skipper Tana Umaga (2), Conrad Smith, Ali Williams and Rico Gear ensured another success.
Woodward took a record 45-man group to New Zealand, which rose to 50 when Simon Shaw, Simon Easterby, Ryan Jones, Brent Cockbain and Jason White joined the trip as tour replacements.
But their combined expertise, complete with a 29-strong backroom team, failed to shine through.
''I think we have to take collective responsibility,'' said O'Connell, who was among a handful of players to start all three Tests.
''There were mistakes made, but at the same time I think Clive needed players to produce the goods, and myself and other guys haven't done that. It needs to go both ways.
''Maybe you can point the finger at the coaching staff, but we are all experienced international players and not one of us can hold our hands up and say we've had very good tours.''
He added: ''The All Blacks were very good, but we were nowhere near.
''When you look back at the 1997 Lions tour to South Africa, there were a lot of stand-out guys, people like Scott Gibbs, Paul Wallace, Matt Dawson, Gregor Townsend and Lawrence Dallaglio. We had no real stand-out players.
''A lot of us just didn't bring our A-games with us. In the last two Tests, I've never spilled as much ball in my life.
'''Drisco' (Brian O'Driscoll) went in the first Test, and we just had no real inspirational stand-out players to feed off, and it killed us.''
O'Connell said preparing a squad in just six weeks for as tough a challenge as the All Blacks presented a huge degree of difficulty.
''In the old days, when defence wasn't as structured, the lineout wasn't as structured as it is now and attack wasn't as structured, then six weeks was okay to get a team together,'' said the Munster forward.
''As this level, with the game so professional and everything so rehearsed, six weeks to put in a defensive structure, an attacking structure and a lineout structure is very tough.
''You've got to have everything right, and then you can start to play hard rugby and play continuity rugby, but I suppose we were trying to play hard rugby and find our feet at the same time.''