iptables-translate -A OUTPUT -m connbytes --connbytes 200 --connbytes-dir original --connbytes-mode packets
nft add rule ip filter OUTPUT ct original packets ge 200 counter

iptables-translate -A OUTPUT -m connbytes ! --connbytes 200 --connbytes-dir reply --connbytes-mode packets
nft add rule ip filter OUTPUT ct reply packets lt 200 counter

iptables-translate -A OUTPUT -m connbytes --connbytes 200:600 --connbytes-dir both --connbytes-mode bytes
nft add rule ip filter OUTPUT ct bytes 200-600 counter

iptables-translate -A OUTPUT -m connbytes ! --connbytes 200:600 --connbytes-dir both --connbytes-mode bytes
nft add rule ip filter OUTPUT ct bytes != 200-600 counter

iptables-translate -A OUTPUT -m connbytes --connbytes 200:200 --connbytes-dir both --connbytes-mode avgpkt
nft add rule ip filter OUTPUT ct avgpkt 200 counter