Yaknehaz candles

when making Yaknehaz is it proper to hold the yom tov candles that were lit earlier together, or should you light a couple small candles/matches that will burn out quickly on their own?

Do not light additional candles for Borei Meorei Ha’aish

thank you. is it required to put the two yom tov candle wicks together? Or is it sufficient to just look at the candles and say the bracha?