Going to jump in and argue the grammar here specifically, in an ‘or’ statement like that the ‘serious’ can also modify both things being listed.

‘i want to buy a red car or truck’ does not imply you want a red car or any colored truck

‘an accretive merger or acquisition’ - doesn’t imply you don’t care if the acquisition is accretive or not

unless you are saying if you want to say ‘I want to buy a red car, table, blanket, and shirt!’ you should instead say ‘i want to buy a red car, a red table, a red blanket, and a red shirt!’

if you want to remove that assumption from your sentence, you could instead say ‘a truck or a red car’ or ‘a red car or any colored truck.’