Hi,

Not being an award route master I have decided to ask the experts if this is valid to ticket in buisness class.

I want to do a trip like this

San juan PR to Split Croatia and returning Split Croatia to Monterrey Mexico.

my first question is can I have a stop over in London on the return leg?
and my second question can I route the return like this

Split-Munich-London in LH
(overnight in london)
London - Miami in VA
Miami - Houston - Monterrey in CO

would that be a valid route