Merging two linux partitions

[Ken D'Ambrosio]

On 2019-05-13 21:51, Phil wrote:

> So, the
> question is how do I merge the Linux partition with the new partition
> without losing any data?

IDLE MUSINGS AHEAD -- NO PRACTICAL APPLICATION

So, I got to thinking about how one *would* merge two partitions... and 
I don't really have a good answer.  I mean, for example, how do you deal 
with identically-named files/directories?  Which made me think the whole 
thing was simply impossible, when it occurred to me that there were 
"union" FS options which, logically, merged multiple partitions.  Just 
wondering if anyone knows how *those* dealt with identical filenames and 
any other obstacles?

-K