I remember the merger well. HP told the HP employees to be open and friendly to the CPQ employees. The CPQ employees were told to be aggressive and take over anything they can. Ignore anything HP wanted and fight, fight, fight at all cost. They told them HP was going to dump (fire) all of the HP PC people and just roll in CPQ PC people. I was in meetings where someone from CPQ would say, 'every one here is CPQ so here's what's really going to happen. Ignore anything the HP tell or ask you.'
While it started that way, HP slowly started to dismantle CPQ from the top down until only 3rd level director/managers were in Houston and then it was whittled down to 2nd level for the most part. Over time, Houston started to rise again in the PC business while printers locked the doors and limited HEAVILY how many CPQ people got in. That division is still the norm. You want "HP", go to printers. You want CPQ? Go to PC's. It's night and day.
That said, there were and still are some very talented CPQ people still around. Great folks. I did have some people mention that they appreciated the HP way (no quote marks) in that it forced CPQ people to f-ing lighten/stop the illegal and unethical stuff up but the management arrogance is still around in many areas but at a very throttled lever. You can pick out the blue people from the red people in Houston easily.
It's still not a bad company to work for all things considered but it's not as "tech" as it used to be. Alas, things change. HP was around for the HPQ/HPE split and it sounds like HPE went through and ugly period but has tried to pull it back. It has a lot of baggage from the various businesses that were purchased while HPQ less so.
Yes, Agilent, then Keysight got what was the "tech" of The Hewlett-Packard Company. Those days will live in infamy. HPQ is working on 3D printing but for the most part it's just commoditized PC and printing. Too bad HP blew it with the Jornada/Ipaq/WebOS possibilities.