With all due respect, you have mistated the rule.
T can be Silent after N only with lax vowels in a unstressed position in a sentence.
The lax vowels are e as in end..i as in it.......u as in book.....the schwa sound.....and er
winter, painter, interview, percentage......winner, innerview, painer, percentage
With a stressed T and ST, TS, TR, CT, LT, and sometimes NT combinations, T is [t].
When the syllable is stressed the T is pronounced as in the words con 'tent and con 'tract.
He was content with the contract.....Two stressed T's after N.
container, cantankerous, continue, etc
Also, any time a word is in stressed postion in a sentence, you always have the option of pronouncing the T in order to avoid confusion (even if the vowel is not stressed.)
So, in a statement of this sort.
I love winters.
If you want to avoid the confusion with "winners', you simply pronounce the T. This would be in a formal situation where it might be necessary to avoid such confusion.
In normal speech the dropped T after N rule applies to the American accent.